Front

What is the charge of an electron?

Back

negative (-)

Tags

NGSS.MS-PS2-3

Front

An oxygen molecule usually has two oxygen atoms. True or False?

Back

True

Tags

NGSS.MS-PS1-1

Front

The center of an atom is the _____?

Back

nucleus

Front

Where are protons and neutrons located?

Back

in the nucleus

Front

What is the charge on a proton?

Back

positive (+)

Front

What are molecules made of?

Back

Atoms

Tags

NGSS.MS-PS1-1

Front

What is a compound?

Back

A substance formed when two or more different elements combine chemically.

Tags

NGSS.MS-PS1-1

Front

What is the smallest unit of a compound?

Back

Molecule

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 only one type of atom, while a compound is made of two or more different types of atoms.

Front

What is the chemical formula for water?

Back

H2O

Tags

NGSS.MS-PS1-1