Inv. 4 and 5 Fast and Curious

Front

Which subatomic particles account for most of an atom's mass and volume?

Back

Protons and neutrons.

Front

What is a cation's charge?

Back

Positive.

Front

Most of the elements on the periodic table are classified as _____?

Back

Metals.

Front

What is the atomic mass of an element?

Back

The average mass of all the isotopes of an element.

Front

As you move across the periodic table, atoms tend to get smaller because ______________.

Back

The atoms have more protons.

Front

What are protons?

Back

Subatomic particles with a positive charge found in the nucleus of an atom.

Front

What are neutrons?

Back

Subatomic particles with no charge found in the nucleus of an atom.

Front

What are electrons?

Back

Subatomic particles with a negative charge that orbit the nucleus of an atom.

Front

Define atomic number.

Back

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

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.