Question

State ‘True’ or ‘False’: 1. Cutting a log of wood into pieces is a chemical change ………………… 2. Formation of manure from leaves is a physical change ………………… 3. Iron pipes coated with zinc do not get rusted easily …………………. 4. Iron and rust are the same substances. ……………… 5. Condensation of steam is not a chemical change. ……………….

Answer 1

Answer:

1)false

2)false

3)true

4)false

5)true

Answer 2

Answer:

1.False

2.False

3.True

4.False

5.True

Explanation:

1.Cutting of a log doesn't include chemical changes. The physical properties of the log are still the same.

2.Formation of manure from leaves is a chemical change cause there chemical properties are different.

3.Iron pipes coated with zinc do not rust easily because the zinc coating cuts of the contact of the moisture with iron, hence preventing it from rusting.

4. Iron is an element however rusting is a process.

5.Condensation only brings change in the state of matter, hence it is a physical change.