Burnt Toast Nina and the Neurons


Burnt Toast

Scientist Nina and her young experimenters discover how substances change and react. They investigate why toast goes black when it burns.


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# If you've got a question and you don't know where to go

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# Ask Nina for some help cos she's got a science show

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# She makes sense of her senses while helping all her fans

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# By doing her experiments with potions and with bangs

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-# Touch your tongue

-Tongue!

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-# Fingers

-Fingers!

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-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

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# Nina and the Neurons find out what you need to know

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# Nina and the Neurons find out what you need to know

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# Luke, he helps us with our eyes and Felix with our touch

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# Ollie sniffs out smells and scents and Belle, she hears so much

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# Bud is Ollie's brother He helps us with our taste

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# They're Nina's little neurons And they're coming to your place!

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-# Touch your tongue

-Tongue!

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-# Fingers

-Fingers!

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-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

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# Nina and the Neurons find out what you need to know

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# Nina and the Neurons find out what you need to know

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# Oh, yeah! #

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NINA HUMS TO HERSELF

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Oh, hello!

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Sorry! I've lost a pen and I think I've left it in this lab coat.

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Oh! Oh, no. A burn mark.

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Oh, no! I must have done it when I was ironing last week.

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It's left a big, brown mark. Silly me!

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BLEEPING

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I hear a beep, I see a flash, I wonder what they're going to ask?

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BOTH: Hi, Nina!

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Hi, guys!

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-We've got a question.

-Why does toast go black when it burns?

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That's a great question!

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Why does toast go black when it burns?

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Come to my lab. We'll do experiments to investigate.

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-BOTH: See you soon, Nina! Bye!

-Bye!

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I'm going to need some help and I know just who to ask.

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OK, Neurons. Time to get to work.

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Neurons at the ready, Nina!

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OK, today's question is, why does toast go black when it burns?

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Which neuron do you think will be most useful in helping us?

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ALL: Me!

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Will it be fabulous Felix?

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I can help so very much, if you need the sense of touch.

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-Will it be beautiful Belle?

-I send messages to brain from ear,

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if there's a sound, I'll help you hear.

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Will it be lovely Luke?

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Looking and seeing, day or night,

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I'll help you with your sense of sight.

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Will it be awesome Ollie?

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If it's pongy or whiffy, but you can't tell,

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-my messages help your sense of smell.

-Or will it be baby Bud?

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Sour, salty, bitter or sweet, I'm your taste buddy, whenever you eat.

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BLEEPING

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It's Bud and Ollie!

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CHEERING

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NEURONS: Go, Bud, go Ollie! Go, Bud, go, Ollie!

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Go, Bud, go, Ollie!

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Go, Bud!

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Yippee!

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It's you and me, sis!

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Stand by for a taste and smell-a-thon!

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Today's question is, why does toast go black when it burns?

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We use our sense of taste to eat toast

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and our sense of smell to smell when it's burning!

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So, Bud and Ollie will be helping. But stand by, Neurons,

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I may need help from you all.

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I need to get the lab ready for the experimenters.

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Morgan loves chocolate brownies. His friend Cameron loves to swim.

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They want to know about burnt toast, so today, for one day only,

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Morgan and Cameron become The Experimenters!

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-Hi, guys!

-BOTH: Hi, Nina!

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Welcome to my science lab, it's lovely to see you.

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Now, your question was, why does toast go black when it burns?

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-Why do you want to know?

-Cos sometimes my mum burns my toast.

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We want to know why it goes black.

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Well, I've burnt the odd piece of toast myself, to be honest!

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It's a great question. For our first experiment, we'll use our senses.

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Whoop-whoo! A senses experiment!

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We're ready, Nina!

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-Are you ready to experiment with toast?

-Yes!

-OK.

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A toaster can become really hot, so I'm going to be extra careful.

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You should never touch the toaster at home, as it could burn you.

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OK, how does that look?

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Would you call that toast?

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-No.

-No, it's not quite toast yet.

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OK, let's leave that piece there. We'll put these in a little longer.

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Oh, I can smell it toasting now.

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-Bud, you're drooling!

-Sorry!

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Oh!

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What do you think now?

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It's brown and it's hard.

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Does that look like toast should look?

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Yeah? I think so. It looks pretty tasty.

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Oh, it smells delicious.

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But when it Nina going to taste it?

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Sorry, Bud, that's not part of the experiment!

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Hmmpp! Not fair!

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Oh, what can you smell now?

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I can smell burning.

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BOTH: Burning.

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Oh, my goodness!

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Oh-oh.

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NINA GIGGLES

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I definitely burnt the toast this time!

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And look. There is that black stuff

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you were talking about.

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I'll scrape it all off there.

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Oh, and it smells smoky and burnt, doesn't it?

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-Why do you think it burnt?

-Because you left it in the toaster too long.

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Yes, our senses experiment has shown that when bread is heated up enough,

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it toasts and gets browner and browner - and smells lovely.

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But if we toast it too long, it turns black. But why does it?

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And does everything turn black when it burns?

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We need to do another experiment.

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Now, I'm using a Bunsen burner to burn things in this experiment.

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That's why I'm wearing safety goggles and gloves.

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And also why you guys are standing well back, OK?

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That's right. Nina has been specially trained to do this.

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You must never go near fires or try to burn things,

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as you could get hurt.

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I want to see what happens to different items

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when I burn them.

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-Are you ready?

-Yes!

-Yes!

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Let's see what happens when I try to burn the metal key.

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What's happening to the key?

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-It's not burning.

-Not burning.

-No, it's not, is it?

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But the metal is very hot, so I'm going to put it in a safe place.

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Next, the potato.

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-What's happening to it?

-It's burning.

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I wouldn't like to eat it.

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NINA LAUGHS

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Yeuch! I can smell it! That burnt smoky smell.

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Hmmp! First, Nina burns toast and now potatoes!

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Next, the stone.

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-Is the stone burning?

-No.

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So, the metal key and the stone didn't burn.

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And, finally, the pasta!

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-What's happening to the pasta?

-BOYS: It's burning.

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ALL LAUGH

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Oh, it's definitely burnt!

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And it's black.

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Ho-ho! OK.

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So, what burned and what didn't?

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The potato and the pasta burnt.

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The stone and the key didn't burn.

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So, the foods that we burned turned black,

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but the things that weren't food didn't turn black.

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In science, we call the black stuff that you see on burnt food, carbon.

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But what is carbon?

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To find out more, we'll visiting a place

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where there's lots of fire. Let's go!

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Here we go!

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I can't wait to see where we'll end up today.

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Nine said it's a place where there's lots of fire and burning.

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I wonder if it's a campfire, with all those crackly, sparking noises.

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And that strong, smoky smell of burning.

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Look over there.

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-This place is quite mysterious. Any idea why I've brought you here?

-No!

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Well, we have a burning question that we need answered.

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And this is just the place to do it. Oh!

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Come with me.

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Wow-wee! What are those big metal things?

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These are called kilns, Bud.

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See all the smoke coming out of its chimneys? Pretty cool, eh?

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They don't feel very cool to me. In fact, they are roasting hot.

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That's because a kiln is a bit like a big oven, Felix.

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But you don't put food in it, you put wood in it.

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Lots and lots of wood.

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And I know someone who can show us more. So, follow me.

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-Hi, Charles!

-Hi, Nina!

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-Would you like to see what it does to the wood?

-Please.

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Ooh, over here, guys.

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Have you seen this black stuff before?

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Yes, sometimes my dad uses it for a barbeque.

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Well, this is charcoal.

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What colour is it?

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-Black!

-It is. What do you think it's made of?

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It looks a bit like the black stuff on Nina's toast.

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Is it carbon?

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Right. Charcoal is made of carbon.

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To make charcoal, wood from trees is roasted in one of these

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big kiln ovens for hours and hours - like putting bread into a toaster.

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And most of the wood burns away until only carbon is left.

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So do trees have carbon in them, Nina?

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Yes, they do, Morgan.

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In fact, all plants have carbon in them,

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from the smallest blade of grass to the biggest tree.

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Carbon is found in all living things.

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So, is anyone hungry?

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Yes! Me!

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Me, me, me, me, me, me, me, ME!

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Yes, we are, Nina!

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A barbeque!

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A real sausage-munching, kebab-nibbling barbeque!

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Yes!!

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These have been cooking for a little while and those little black bits

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tell us that there is carbon in the food.

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OK, let's eat!

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Mmm!

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Your question was, why does toast go black when it burns?

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We need to find out more about what toast is made from.

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Bread is usually made from a plant called wheat.

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This is what wheat looks like when it's grown in a farmer's field.

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To make bread, wheat is ground down into wheat flour and them mixed

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with other ingredients and baked.

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This wheat has carbon in it, s the bread that's made from it

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has carbon it it, too.

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We don't see it until we toast it and it burns.

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So, your question was, why does toast go black when it burns?

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And I think we've answered it. We discovered that all food

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has something in it called carbon, which is found in all living things,

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from trees and plants, to the animals that eat them.

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Bread contains carbon, because it is made from a plant - wheat.

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When it burns in the toaster, most of the bread burns away,

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leaving carbon. I hope that's answered you.

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Yes, thanks, Nina!

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That's me back in the lab, with a nice full tummy!

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Oh, that barbeque was so tasty!

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If you want to know more about the science that's all around us,

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go to the Nina section on the CBeebies website. Have fun!

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Lab coat on, Nina?

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Lab coat on, Ollie!

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Safety gloves on, Nina?

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Safety gloves on, Felix!

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And don't forget your goggles, Nina.

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Goggles are on, Luke! I think we're ready!

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# We do experiments in the lab

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-# In the lab!

-Shoobie-doobie, in the lab!

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# Boggling experiments in the lab

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-# In the lab!

-Go, Nina, in the lab!

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# Fizzing and popping Steam and smoke

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# We need protection, don't we, folks?

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# We always put our safety first!

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# Shoobie, doobie, doobie, doobie!

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# We do experiments in the lab

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# In the lab!

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# Go, Nina! #

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I really enjoyed my self today.

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The toast smelled delicious, until Nina burned it.

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Ah, it's been such a great day, man,

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seeing what burned and what didn't.

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It's been a marvellous day,

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feeling lot of heat from those charcoal kilns.

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I've had a fabby day!

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The barbeque was absolutely taste-tastic! He-he!

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Our day has been bursting with sensational experiments.

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I hope you've enjoyed it. Bye!

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Bye!

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Subtitles by Red Bee Media Ltd

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Scientist Nina and her young experimenters discover the amazing ways that things can change and react in the everyday world.

Nina investigates why toast goes black when it burns with the help of Bud and Ollie, her taste and scent neurons. Experimenters Cameron and Morgan visit Nina in her lab and discover that the black stuff on toast is something called carbon. Nina uses her Bunsen burner to prove that all foods go black when they burn - much to Bud's disgust!

Then they all go to a forest to see wood being roasted to make charcoal and discover that carbon is found in all living things. Finally, Nina cooks some yummy food on a barbecue making Bud a very happy taste bud.


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