Ch. 4 General Chemistry Review

The modern periodic table is arranged by increasing atomic mass of the elements.

• True

• False

Aristotle named atoms atoms.

• True

• False

A cathode ray tube consists of a stream of protons.

• True

• False

In a neutral atoms, the number of protons is equal to the number of neutrons.

• True

• False

Gamma decay emits energy but no particles.

• True

• False

An alpha particle is the equivalent of a Helium-4 nucleus.

• True

• False

Nuclear decay can change one element into another one.

• True

• False

Isotopes are forms of an element that have the same number of protons but a different number of electrons.

• True

• False

An input of energy is required in order for nuclear decay to happen in an atom.

• True

• False

Gamma decay is a form of nuclear radiation that consists entirely of energy, not matter.

• True

• False