Unit 3: Atoms and the Periodic Table Review

Front

In the modern periodic table, elements are arranged by:

Back

atomic number

Front

The law of conservation of mass says substances can neither be _______ nor ___________.

Back

Created; destroyed

Front

When the elements copper (Cu) and oxygen (O) chemically combine, they form...

Back

a compound

Front

Each vertical column in the periodic table is called a:

Back

group

Front

These are the SMALLEST subatomic particles:

Back

Electron

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.