Reversible and irreversible changes. Post written by Max.

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Today in science we have been learning about reversible and irreversible changes.we decided that ice would be a reversible change and chocolate would also be a reversible change if they were melted because they would both turn back into a solid if they were cooled. we also made rice crispie cakes and thought about how the particles changed at each stage.There were 3 main stages :

1) Breaking the chocolate when the chocolate started of f as a solid with lots of pieces of chocolate attached.

2) melting the chocolate

3)  cooling the chocolate. We found that when solids are heated the particles get more energy and vibrate and move more. This lesson was fun! What did you learn?

Post by Max .

15 Responses so far »

  1. 1

    hammaad said,

    If you cook an egg it is a irreversible because you cant put it back toghether.

  2. 2

    cameron said,

    If you cook a pizza you cant reverse it.

  3. 3

    sana said,

    if you baked a cake it would irreversible beacuase if you putted egg and flavour it wouldt change back to be raw again. Once it is cooked it can’t change back.

  4. 4

    karolina 4m said,

    if you bake a cake you cant get the ingredients back out so it is an irreversible change.

  5. 5

    shawon said,

    If you melt a chocolate and then turn it back to solid it is a reversible change.

  6. 6

    mya said,

    I learnt a lot today about reversible and irriversable. For exapmle a loaf of bread is irriversble because you can not get your ingrediants back the same with a cake.
    Also a rock and a chocolate are reversible.

  7. 7

    Can you describe how you think the particles might be arranged at different stages of the rice crispy cake making?
    Miss Martindale.

  8. 8

    cameron said,

    It was hard brakeing the chocolate.

  9. 9

    karolina said,

    today it was a amazibg lesson and we learnt lots of things also it was fum mixing but it was a bit hard braking the chocolate like cameron said

  10. 10

    bismah 4m said,

    Making the rice crispie cakes was really fun.My favourite part was when we mixed the crunchy crispy cakes and the mouth-watering,lucious chocolate.What was your favourite bit?I want to make them at home!

  11. 11

    zara said,

    it was really fun making rice krispie cakes my favrite part was when we had to break the chocolate and wait for it to melt.the chocolate smelt apptising and lucious.

  12. 12

    Mrs Berryman said,

    Wow! I am so impressed with your blog Max. It seems as if you are doing a lot of fantastic work in your class. I think we should steal your chocolate science experiment idea to do in year six.

  13. 13

    noorulain said,

    Today it was fun.

  14. 14

    Darshana said,

    it was fun making the rice crispy cakes
    at school they where scrumpcouis and loucouis

  15. 15

    mrs meredith said,

    Thanks for the chocolate rice krispies, glad to have helped marked your super, chocolatey science experiments!

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