CH. 8: Chemistry flashcard

Front

What charge do electrons have?

Back

Electrons have a negative charge.

Front

What charge do neutrons have?

Back

Neutrons have no charge (neutral).

Front

How many electrons does an atom with 2 protons have?

Back

An atom with 2 protons has 2 electrons.

Front

How many protons are in a helium atom?

Back

A helium atom has 2 protons.

Front

What does the top number in isotope notation represent?

Back

The top number in isotope notation represents the mass number.

Front

What is the charge of protons?

Back

Protons have a positive charge.

Front

What is the atomic number?

Back

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

Front

What is the mass number?

Back

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

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an atom's isotopes, while mass number is the total count of protons and neutrons.

Front

What is an isotope?

Back

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