Atoms, Atomic Theory, and the Periodic Table

Front

What is the correct order of phase change on the heating curve?

Back

solid, liquid, gas

Front

How many valence electrons are in an atom of Potassium (K)?

Back

1

Front

Which is not a characteristic of an alkaline earth metal?

Back

colorless

Front

How many neutrons are in Beryllium (Be)?

Back

5

Front

How many valence electrons are in an atom of Argon (Ar)?

Back

8

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Front

What is atomic theory?

Back

A scientific theory that explains the nature of matter by stating that matter is composed of atoms.

Front

What is the periodic table?

Back

A tabular arrangement of the chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in the nucleus of an atom and determines the element's identity.