Atoms and the Periodic Table

Front

What does the number of protons in an atom tell us?

Back

The atomic number.

Front

The horizontal (side to side) rows in the Periodic Table are called:

Back

Periods.

Front

If an atom has 6 protons, 7 neutrons, and 6 electrons, what is its charge?

Back

Neutral.

Front

The atomic number tells you what?

Back

The number of protons.

Front

Sodium (Na) is found in which period?

Back

3.

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 the atomic mass?

Back

The weighted average mass of an element's isotopes.