Physics Quiz 1

If 1 gram of antimatter meets with 4 grams of matter, the energy released would correspond to the energy equivalent of

2 grams

An element is a substance consisting of

atoms of the same kind

The reason you don't fall between the atoms in the floor you stand on involves

electrical forces

Which has the smallest mass?

electron

The size of an atom is mostly determined by the space occupied by its

electrons

A compound is composed of different kinds of atoms

in definite proportions

Isotopes of a given element differ in

mass number

The atoms in isotopes of a particular element have different numbers of

neutrons

Brownian motion has to do with the

random motions of atoms and molecules

Atoms combine to form molecules by way of

shared or exchanged electrons

The shell model of the atom views electrons as occupying

shells