7th grade science

Front

What are the vertical columns in the Periodic Table called?

Back

Groups

Front

What does the Periodic Table list?

Back

Elements

Front

What does it mean for an atom to be neutral?

Back

It has the same number of protons and electrons.

Front

What is the correct chemical symbol for oxygen?

Back

O

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is the state of matter that has a definite shape and volume?

Back

Solid

Front

What is the process of changing from a liquid to a gas called?

Back

Evaporation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.