Physical+and+Chemical+Changes+including+MasterChef

Consider an episode of Master Chef (or similar). Identify the physical and chemical changes that take place. Draw a simple diagram or sketch (or find one!) to show at particle level what is occurring in each. Construct a table to compare physical and chemical changes. Include your examples in the table. Describe how you could demonstrate the difference between physical and chemical changes to primary school aged children.
 * Expert Group Member 3:**

MASTER CHEF - Expert group members for Question 3 - What did you find out?

Can you think of any everyday examples that might be relevant to your students?
 * Use a table to show the difference between physical and chemical changes of materials.**


 * Physical Changes || Chemical Changes ||




 * Physical Changes || Chemical changes ||
 * * The substance does not change
 * Rearranges molecules but does not affect their internal structure
 * are reversible || * A new substance is formed
 * Making or breaking of bonds between atoms
 * Energy is either given off or absorbed
 * Are not reversible, it would take extreme measures to revert back to the original substance, if at all.

Here are some resources for chemical changes in the kitchen

Found this website with kitchen chemistry information and resources [|Kitchen Chemistry]

Heston Blumenthal – 3 star Michelin chef is inspired by science for the wonderful creations he makes with food [] Heston Blumenthal’s Kitchen chemistry part 1 [] Heston Blumenthal’s Kitchen chemistry part 2

If I was explaining physical change to primary school students water is a hard one to pass up. It's the easiest substance to show its form as a solid, liquid or gas. Show a picture of how the atoms would be formed in ice (solid), a glass of water (liquid) and steam (gas).

For explaining a chemical change, I would demonstrate mixing a cake and using heat to bake the cake. The different substances of milk (liquid), flour (solid), sugar (solid), eggs (liquid)? Combine and chemical reactions occur and once the mixture is in the oven, a catalyst of heat is used to form a new substance. (Billie-Jean RYALS, External, 10-08-15)