S8P1 GMAS Review - Matter

The smallest unit of matter that defines a chemical element.

• Molecule

• Atom

• Compound

A substance that cannot be broken down into simpler substances by chemical means.

• molecule

• compound

• element

The smallest particle of a substance that has all of the physical and chemical properties of that substance. They are made up of one or more atoms.

• Molecule

• Atom

• Compound

Tags

NGSS.MS-PS1-1

What is a substance that is made up of two or more elements that are chemically combined?

• Mixture

• Solution

• Compound

The number written before a chemical formula that denotes how many molecules are needed to balance an equation? This is the variable that can be changed when balancing chemical equations.

• Subscript

• Superscript

• Coefficient

The index that denotes the number of atoms of an element in a chemical formula? This can not be changed when balancing chemical equations.

• Subscript

• Superscript

• Coefficient

At what temperature does a substance change from liquid to gas?

• Melting point

• Freezing point

• Boiling point

Tags

NGSS.MS-PS1-4

What is the process of a gas turning into a liquid?

• Evaporation

• Sublimation

• Condensation

Tags

NGSS.MS-PS1-4

A property of a substance that can only be observed during the formation of a new substance.

• Chemical equation

• Chemical change

• Chemical property

Tags

NGSS.MS-PS1-1

What is the term for the number of protons in the nucleus of an atom?

• Atomic mass

• Atomic number

• Molecular weight