Question

2. When chemical change occurs, heat is released
or absorbed
3. Formation of crystals of sugar from a sugary
syrup is a chemical change.
State Yes or No:
1. Is digestion of food a physical change?
2. Are galvanised pipes used in community water
supply system?
State Right or wrong:
1. Steel is an alloy
2. Is rust iron oxide?​

Answer 1

when chemical change occurs heat ia released

Answer 2

Answer:

2.released

3.yes

1.yes

2.no

1.right

Right