(Question)
Q: All chemical changes involve a transfer of what? Choices: - heating - fuel - Water - energy A:
(Answer)
energy

(Question)
Q: Every chemical reaction occurs with a concurrent change in what? Choices: - neutrons - mass - hydrogen - energy A:
(Answer)
energy

(Question)
Q: What helps control the muscles and maintain balance? Choices: - circulatory system - muscular system - lymphatic system - nervous system A:
(Answer)
nervous system