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When you bern paper you can not get it back (irreversible change)

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water is a reversible change

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Reversible changes are known as physical changes

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If you burn something, such as wood or paper, then you can't get it back so it's an irreversible change

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When u melt ice u can get it back to its normal form by freezing it

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A example of reversible change the ice lollie can be changed back can be changed back in to orange juice by heating.

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Ice is a reversible change

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Don't burn paper because when you burn it you ashes and you can't get it back so it's irreversible

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Melting is a reversible change and also freezing is a reversible change

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A chemical change means you can't get it back.

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If something is irreversible you Can't get it back

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Salt dissolves into water so it looks like

It's irreversible but you can actually get it back

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irreversible is a change were you cannot change it back to what it was

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Yo can seprat solt and water by avaprating

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A solution is when a substance is mixed with water to create a transparent liquid

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Mixing bicarbonate of soda with water creates a fizz so we know that it is a chemical change.

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When vinegar is mixed with bicarbonate there are bubbles and the liquid mixtures left behind and cannot be turned back in to vinegar and bicarbonate again and is a chemical reaction.

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We have done loads of fun tests

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A reversible change is a change that can be undone or reversed

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If something is a reversible you can get it back

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You can melt chocolate and get it back again by freezing it

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If you cook eggs you cannot get them back

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You can't get wood back when it's burned

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I'm melting a ice cube and it's turning to water

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A physical change means you can get It back

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George  this is melting a physical change 

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George  this is melting a physical change 

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If you heat ice it melts

This is reversible

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Physical change means you can get it back

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Physical change means you can get it back

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Chemical change is where you can't get stuff back to its original form

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Ice cream is a physical reaction

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Reversible changes are also known as physical changes

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If you burn wood it will turn into ash

And then you can't get it back

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Eggs are irreversible when they are cooked

Science is so fun

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You can get chocolate back from heating by cooling.

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Irreversible means your not able to get it back and reversible means you are.

Iriversible is chemical

Iriversible is physical

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Wood is a chemical reaction

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Heating can cause a irreversible change

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If you burn something it turns

To ashes and you can't get it back

This an irreversible change

And a chemical change

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Irreversible changes are also known as chemical chamges

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If you burn paper you can't get it back

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If you cook an egg you won't get it back

It is the same with chicken and bread

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Lewis Solids are where you can't move them only if you heat them up that makes them a liquids.

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If you burn paper you get ash

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Solid,liquids,gases have different prototypes