A
Explanation: hydrogen has a charge of 1 and oxygen has a charge of -2, so you will need 2 hydrogens to balance out the oxygen
Chemical change, because the white powder heated the water and caused a thermal reaction, and possibly gas was produced due to bubbles.
A is a model of a decomposition reaction
Radio waves
microwaves
infrared waves
red waves
orange
yellow
green
blue
violet
Ultraviolet
xrays
gamma
Answer:
The state of matter of each compound or molecule is indicated in subscript next to the compound by an abbreviation in parentheses. For example, a compound in the gas state would be indicated by (g), solid (s), liquid (l), and aqueous (aq).
Explanation:
