Matter Review

Front

What are isotopes?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the atomic number of an element?

Back

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

Front

What is the mass number of an atom?

Back

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

Front

How do you determine the number of neutrons in an atom?

Back

To find the number of neutrons, subtract the atomic number from the mass number.

Front

What is the atomic symbol for Beryllium?

Back

The atomic symbol for Beryllium is Be.

Front

How many protons are in a neutral atom of Beryllium?

Back

A neutral atom of Beryllium has 4 protons.

Front

How many electrons are in a neutral atom of Beryllium?

Back

A neutral atom of Beryllium has 4 electrons.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

What is the significance of the atomic symbol?

Back

The atomic symbol is a one- or two-letter abbreviation that represents a chemical element.

Front

What does it mean for an atom to be neutral?

Back

An atom is neutral when it has an equal number of protons and electrons, resulting in no overall charge.