What is the term used to describe the energy needed to get a reaction started?
a. adhesion energy
c. cohesion energy
b. activation energy
d. chemical energy

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius

What happens in the particles of a gas when the gas is compressed