Phy Sci Final Review

Front

In an electrically neutral atom, what is the relationship between protons and electrons?

Back

In an electrically neutral atom, there are equal numbers of protons and electrons.

Front

List the three main types of nuclear radiation from highest penetrating power to lowest.

Back

The order from highest to lowest penetrating power is gamma, beta, alpha.

Front

What is the formula for the compound formed between lithium and sulfur?

Back

The formula is Li₂S.

Front

What is the identity of the atom with atomic number 10?

Back

The atom is neon.

Front

How many neutrons are in the nucleus of calcium-47?

Back

There are 27 neutrons in the calcium-47 nucleus.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

Define isotopes.

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the charge of an electron?

Back

The charge of an electron is negative.

Front

What is the significance of the atomic mass number?

Back

The atomic mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What type of radiation is emitted during alpha decay?

Back

Alpha decay emits alpha particles, which consist of 2 protons and 2 neutrons.