Collide Get hot Turn blue Go shopping
Will turn particles positive Will turn particles negative Will decrease the rate of reaction Will increase the rate of reaction
The particles are stronger The particles are bigger The particles are smaller The particles are closer together
Less water A bigger surface area A smaller surface area The same surface area
The smell of smoke The temperature of a reactant The rate of formation of a product The speed of a falling rock
The rest mass The rest energy The activation mass The activation energy