A light year is the distance traveled by light in a year.
Answer:
B I guest but m not so sure..
Answer:
All chemical reactions involve energy.Energy is used to break bonds inreactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions releaseenergy. The law of conservation ofenergy states that matter cannot be created or destroyed.
Answer:
false
Explanation:
state of matter is physical propertu