Answer:
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.
Answer:
an example is water where (H) and oxygen (O) bond together to make (H2O)
Explain:
Na - 2 atoms
S - 2 atoms
O - 3 atoms
2 + 2 + 3 = 7, correct answer is D
B. No since rusting is a chemical change it does not follow the law of conservation of mass.
Prograde or direct motion, in astronomy, a type of astronomical bodies