Structure of Atoms

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Tags

NGSS.MS-PS1-1

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

What is the mass of a proton?

Back

Approximately 1 amu (atomic mass unit).

Front

What is the mass of an electron?

Back

Approximately 1/1836 amu.

Front

What is the overall charge of an atom?

Back

Atoms are neutral overall because they have equal numbers of protons and electrons.

Front

What is the role of the nucleus in an atom?

Back

The nucleus contains protons and neutrons and is the central core of the atom.

Front

What experiment did Rutherford conduct to discover the nucleus?

Back

The Gold Foil Experiment.

Front

What is the electrical charge of an electron?

Back

Electrons have a negative charge.

Tags

NGSS.MS-PS2-3

Front

How do you calculate the atomic number of an element?

Back

The atomic number is equal to the number of protons in the nucleus.