review for Chemistry S1 Exam 2024

Front

What is the charge of an atom that has lost one electron?

Back

+1

Front

Which of the following is an example of a physical property?

Back

Ability to conduct electricity

Front

What is flammability classified as?

Back

Chemical Property

Front

The atomic mass is the number of ______ and _______.

Back

protons and neutrons

Front

Which of the following elements has a full valence electron shell?

Back

Neon

Front

What is the definition of an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its chemical composition.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an ion?

Back

An atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.