Unit 4A Flashcard Practice

Front

What is the Bohr model of the atom?

Back

The Bohr model is a representation of the atom that depicts electrons orbiting the nucleus in defined paths or energy levels.

Front

How many electrons does a helium atom have?

Back

A helium atom has 2 electrons.

Front

What are 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 strong force?

Back

The strong force is an attractive force that exists between protons and neutrons within the nucleus of an atom.

Front

Which particles are found in the nucleus of an atom?

Back

The nucleus of an atom contains protons and neutrons.

Tags

NGSS.HS-PS1-8

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in the nucleus of an atom and determines the element's identity.

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.