True
False
false; you cannot get energy from nothing, it is conserved
False. An electric motor converts electrical energy into mechanical energy, not potential energy.
True. Fossil fuels, such as coal, oil, and natural gas, are nonrenewable resources because they are finite and take millions of years to form. Once they are used up, they cannot be replaced within a human lifespan.
true
true
True.
True
False
false
False. Activation energy is needed by all chemical reactions, regardless of whether they release or absorb energy. It is the minimum amount of energy required to initiate a chemical reaction.