Question

What do these two changes have in common?

bleaching clothes
snowflakes forming in a cloud
Select all that apply.
a. Both are changes of state
b. both are only physical changes
c. both conserve mass
d. both are chemical changes

Answer 1

Bleaching clothes and forming snowflakes in a cloud are both examples of physical changes and both conserve mass; they do not involve chemical alterations to the substances involved.

Step-by-step explanation:

The commonalities between bleaching clothes and snowflakes forming in a cloud include the following aspects:

• Both conserve mass, which is a fundamental principle across all physical and chemical changes.
• Both are only physical changes, as they only affect the physical appearance and not the chemical composition of a substance.

Bleaching of clothes does not alter their molecular structure; instead, it removes the color from the fabric. Similarly, the formation of snowflakes is a change of state, specifically crystallization, where water vapor in a cloud freezes into ice crystals, a physical change. Neither process is a chemical change; they don't result in the transformation of one molecular substance into another.

From the options provided, both b. both are only physical changes and c. both conserve mass apply to both situations.