CO2(s) --> CO2(g) is an example of: a chemical change.

a decomposition reaction.

a physical change.

a combination reaction.

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

Identify two types of chemical bonding in the source of dietary potassium