END OF MODULE 3 TEST

Front

What happens to an atom when you add a proton?

Back

It becomes a different kind of element.

Front

What is the difference between nuclear fusion and nuclear fission?

Back

In fusion, the product is a larger atomic nucleus.

Front

What is the mass number of an atom?

Back

The mass number is the number of protons and neutrons in the nucleus.

Front

What is the charge of an alpha particle?

Back

+2

Front

What does the Geiger-Marsden experiment reveal about the structure of an atom?

Back

The atom is made up mostly of empty space.

Front

Define an atom.

Back

An atom is the basic unit of a chemical element, consisting of protons, neutrons, and electrons.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the role of the nucleus in an atom?

Back

The nucleus contains protons and neutrons and is the center of the atom, contributing to its mass.