Which statement about kinetic energy is true?

a) it increases if a catalyst is added to the reaction.
b)it is not affected by temperature.
c) it is the energy required to form a new product.
d)it doesn't affect the collision of reacting substances.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

What relationship exists between an enzyme and a catalyst?