Atoms, Periodic Table

Front

What is at the center of every atom?

Back

The nucleus.

Front

What is a compound?

Back

Two or more elements chemically combined.

Front

Positively charged atoms are called _____

Back

Protons.

Front

What does the nucleus of an atom contain?

Back

Protons and neutrons.

Front

Which of the following is a compound? CO2, C, O, Co

Back

CO2.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What charge do electrons have?

Back

Negative charge.

Front

What is the atomic number?

Back

The number of protons in an atom.

Front

What is the periodic table?

Back

A table that organizes all known elements by their atomic number.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances.