Answer:
Explanation:
Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Or Light is given off, a permanent color change occurs, gas is given off, heat is given off, and a precipitate is formed
Answer:
I think it's A
Explanation:
H202 is hydrogen peroxide
H20 is water
Plant’s roots can take up water by capillary action.
Answer:

Explanation:
For this problem, you will have to convert moles to atoms. Use Avogadro's number.
