1 What is the definition of chemical change?
A any change that results in the formation of new chemical substances.
B changing clothes
matter cannot be created or destroyed, only change form
D changes affecting the form of a chemical substance, but not its chemical composition

Evaluate this exponential expression,8. (2 + 3)2 – 42

Water is important for the of cells. a: size, shape, and temperature b: temperature, color, and odor c: color, odor, and size d: shape, temperature, and color

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.