4C - Chemical Reactions Knowledge Test

Candidate Name:
1) What is a physical change?
2) What happens to the particles in a physical change?
3) When do chemical changes occur?
4) What happens to the atoms in a chemical reaction?
5) What happens to atoms in chemical reactions?
6) What are reactants?
7) What are products?
8) What is the difference between a chemical and a physical change?
9) What happens to atoms in chemical reactions
10) What 4 things tell us a chemical reaction has occurred?
11) How do we know that there is conservation of mass in a chemical reaction?
12) What is combustion?
13) What are the products and reactants in combustion?
14) What is an oxidation reaction?
15) What type of chemical reaction is rusting?
16) What reaction causes metals to tarnish?
17) What happens in an exothermic reaction?
18) What happens in an endothermic reaction?
19) What happens in a thermal decomposition?
20) What happens in a displacement reaction?
21) What is the name of a reaction between an acid and an alkali?
22) What do we use the pH scale for?
23) What is a catalyst and what do they do in a reaction?
24) How do the Big Ideas link to this topic?

a) Forces:

b) Particles:

c) Energy:

d) Cells: