PHYSICAL SCIENCE CHEMISTRY REVIEW #1

Front

All matter is made of ____.

Back

atoms

Front

This substance is _____ (acidic or basic).

Back

basic (alkaline)

Front

All atoms have ____ part(s).

Back

3

Front

Substances that have a definite volume and an indefinite shape are ____.

Back

liquids

Front

The 195.085 is the ____. When rounded to 195, it tells us the ____ in an atom of this element.

Back

mass number, #protons and #neutrons

Front

What is the definition of an atom?

Back

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is the difference between an acid and a base?

Back

Acids donate protons (H+) in a solution, while bases accept protons.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.