Atomic Changes Test Review

Front

What is a valence electron?

Back

Electrons in the outer shell of an atom that are involved in chemical bonding.

Front

Which element is represented by the symbol 'Ne'?

Back

Neon, a noble gas that is colorless and odorless.

Front

What is the purpose of neutrons in an atom?

Back

Neutrons help hold the nucleus together by providing nuclear stability.

Front

On the periodic table, what are Groups?

Back

Vertical columns that categorize elements with similar properties.

Front

What are isotopes?

Back

Atoms of the same element that have different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between an ion and a neutral atom?

Back

An ion has a net charge due to the loss or gain of electrons, while a neutral atom has an equal number of protons and electrons.

Front

What are the three subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.