Physical Science Final Exam Review

Front

What are isotopes?

Back

Isotopes are elements that contain a different number of neutrons but the same number of protons.

Front

How many protons, neutrons, and electrons are in a lithium atom?

Back

A lithium atom has 3 protons, 3 electrons, and 4 neutrons.

Front

Which element has chemical properties most similar to potassium (K)?

Back

Sodium (Na) has chemical properties most similar to potassium (K).

Front

What is a characteristic of acids?

Back

Acids are able to turn litmus paper red.

Front

What does an electromagnet do in a motor?

Back

An electromagnet changes electrical energy into kinetic energy.

Front

Define protons.

Back

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

Front

Define neutrons.

Back

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

Front

Define electrons.

Back

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

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (acidic) to 14 (basic).

Front

What is a cation?

Back

A cation is a positively charged ion, formed when an atom loses one or more electrons.