fizzing and foaming-a science inquiry

Room 6 presents…Room 6 presents…

Fizzing and Fizzing and Foaming:Foaming:

A Scientific InquiryA Scientific Inquiry

The Big The Big Questions!Questions! Why does coke always fizz when you Why does coke always fizz when you

open the bottle?open the bottle?

How do you get the bubbles in a coke How do you get the bubbles in a coke bottle?bottle?

What happens when you mix things that What happens when you mix things that fizz with things that don’t?fizz with things that don’t?

The Big The Big Ideas….Ideas….

Substances have physical and chemical

properties that can be described.

We can use theseproperties to group

substances.

We can investigate the properties by observing how it reacts with other

substances

When a chemical change takes place,

new substancesare formed.

HOOKING IN

Experiment 1: Experiment 1: Zing and Zizz!Zing and Zizz!

What you need:What you need:

AcidsAcids

Lemon juiceLemon juice

Orange juiceOrange juice

VinegarVinegar

Grapefruit juiceGrapefruit juice


CarbonatesCarbonates

Washing powderWashing powder

Baking powderBaking powder

ChalkChalk

Crushed eggshellsCrushed eggshells


Other substancesOther substances

FlourFlour

SugarSugar

TeaTea

Vitamin C tabletsVitamin C tablets

(dissolved in water)(dissolved in water)

Experiment 1: Zing Experiment 1: Zing and Zang!and Zang!

What You DoWhat You Do- Choose an ‘acid’, a Choose an ‘acid’, a

‘carbonate’ or another ‘carbonate’ or another substance.substance.

- Mix the two of them togetherMix the two of them together- Carefully observe what Carefully observe what

happenshappens- Test different combinations.Test different combinations.

Decide:Decide:- Is it an acid?Is it an acid?- Is it a carbonate?Is it a carbonate?- Is it neither?Is it neither?


BEFORE (Our predictions)BEFORE (Our predictions)

““It might fizz!”It might fizz!”

““It’s because of the sugar…”It’s because of the sugar…”

““When we mix the two things together it will When we mix the two things together it will fizz”fizz”

““When we open the container, it might When we open the container, it might explode!”explode!”

“ “ When you mix the two things togetherWhen you mix the two things together

they will make acid and burn through the they will make acid and burn through the table!!!!!”table!!!!!”

AFTER (Our observations)AFTER (Our observations)

We described what the mixtures looked like….We described what the mixtures looked like….

Some Ideas were:Some Ideas were:

Ice creamIce cream PancakesPancakes Lava bubblesLava bubbles Scrambled eggs- omelettesScrambled eggs- omelettes Gassy flat cokeGassy flat coke Creamy melted butterCreamy melted butter MiloMilo CookingCooking MeltingMelting A mixture of coloursA mixture of colours

Experiment 1: Zing Experiment 1: Zing and Zang!and Zang!Recording our findings….Recording our findings….

We asked ourselves the following questions:We asked ourselves the following questions:

- What were we trying to find out?What were we trying to find out?- What did we find out?What did we find out?- What happened?What happened?- What did we learn from these results?What did we learn from these results?

Experiment 1: Zing Experiment 1: Zing and Zang!and Zang!SubstancesSubstances What were you trying to What were you trying to

find out?find out?What did we find out?What did we find out? What happened?What happened? What did we learn?What did we learn?

Lemon juice and Lemon juice and washing powderwashing powder

What would happen What would happen when we mixed two when we mixed two substances together?substances together?

Orange juice and baking Orange juice and baking powderpowder

Vinegar and chalkVinegar and chalk

WHY DOES IT

FIZZ?

So we wanted to know …….

Our first Our first ideas…ideas…

The washing powder causes it to fizz

Because when you mix the

twothings

together it gets really hot.

Vinegar and

baking soda don’t

go together.

The vinegar is really

hotand

that’s what

made itbubble.

The vinegar is bubbly

Why does it Fizz?

Why does it Why does it fizz?fizz?When you mix a substance that containsWhen you mix a substance that contains

an an acid acid (eg: vinegar, citrus fruit juice) and a(eg: vinegar, citrus fruit juice) and acarbonatecarbonate (eg: washing powder, baking (eg: washing powder, bakingpowder, chalk, eggshells) the two react topowder, chalk, eggshells) the two react tomake make carbon dioxidecarbon dioxide gas. gas.

When the gas escapes it causes the When the gas escapes it causes the fizzing!fizzing!

WHERE?

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fizzing and foaming-a science inquiry

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