Question

Which statements describe chemical changes? Check all that apply.

-The after-rain smell is produced by an interaction between rain and the oils released by plants.
-A homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released.
-Sheep are sheared for their wool. The wool is cleaned and twisted into yarn. The yarn is dyed and used to knit clothing.
-The Statue of Liberty has turned green over time due to the reaction of copper with carbon dioxide and water.
-Mosaic art is created by smashing colored glass tiles and rearranging them to form a picture or design.

Answer 1

THe correct answers are A.The after-rain smell is produced by an interaction between rain and the oils released by plants. B. homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released.
D.The Statue of Liberty has turned green over time due to the reaction of copper with carbon dioxide and water.

Answer 2

Step-by-step explanation:

Chemical change is defined as those change in which arrangement of atoms present in the substance changes and leads to formation of new substance.

1.The after-rain smell is produced by an interaction between rain and the oils released by plants. Due to chemical reaction between the rain water and oils secreted out by the plants

2. A homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released. When vinegar reacts with baking soda carbon-dioxide gas is released.

`CH_3COOH+NaHCO_3\rightarrow CO_2+H_2O+CH_3COONa`

3.The Statue of Liberty has turned green over time due to the reaction of copper with ,oxygen,carbon dioxide and water.

`Cu+O_2+CO_2+H_2O\rightarrow Cu_2(OH)_2CO_3`

Physical change is defined as those changes which leads to change in shape, size or state of the substance changes. No new substance is formed.