Atomic Theory and Periodic Table Vocab

Front

What are electrons?

Back

Negatively charged particles.

Front

What is an element?

Back

A substance that consists of only one type of atom.

Front

What does a neutral charge mean?

Back

A charge with equal numbers of protons and electrons.

Front

What is atomic number?

Back

The number of protons in an atom's nucleus.

Front

What are metals?

Back

Materials that are typically hard, shiny, and located to the left of the stairstep line on the periodic table.

Front

What are protons?

Back

Positively charged particles found in an atom's nucleus.

Front

What are neutrons?

Back

Neutral particles found in an atom's nucleus.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.