Question

1) most chemical changes are_________, whereas most physical changes are_________.
2) mixing of iron and sulpher is a_______change, whereas heating of iron and sulpher is a__________change.
3) ___________is formed when magnesium oxide is dissolve in water.
4) Rusting of iron is a ________change, whereas boiling of milk is a________change
5) carbon dioxide gas turns limewater__________.A__________change takes place​

Answer 1

Answer:

1) Irreversible and Reversible.

2) Physical change and Chemical change.

3) Magnesium hydroxide.

4) Chemical change and Physical change.

5) Calcium hydroxide. Exothermic change.

Explanation:

Hope it's helpful!!!!

Answer 2

Answer: 1) irreversible, reversible

              2) chemical, physical

              3) magnesium hydroxide

              4)  irreversible, reversible

              5) milky, chemical