8th Grade Science Unit 3 Vocabulary

A material made of only one type of particle, like sugar or water.

• pure substance
• Conservation Of Mass
• subscript
• periodic table

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

A pure substance that cannot be broken down into anything simpler, like gold or oxygen.

• element
• reactant
• coefficient
• law

A substance made when two or more elements are chemically combined, like water (H₂O) or salt (NaCl).

• compound
• product
• balanced equation
• pure substance

Tags

NGSS.MS-PS1-1

A mixture where the substances are evenly mixed, so you can’t see the different parts, like milk or air.

• homogeneous mixture
• yield
• chemical symbol
• element

A type of homogeneous mixture where one substance dissolves in another, like sugar in water.

• solution
• chemical equation
• chemical formula
• chemical formula

A mixture where you can see the different parts, like a salad or a bowl of cereal.

• heterogeneous mixture
• subscript
• periodic table
• periodic table

Substances that taste sour and can turn blue litmus paper red. They can be found in things like lemon juice or vinegar.

• acids
• coefficient
• law
• law

Substances that feel slippery, taste bitter, and turn red litmus paper blue. They are found in things like soap or baking soda.

• bases
• balanced equation
• pure substance
• pure substance

A scale used to measure how acidic or basic a substance is. It ranges from 0 to 14, with acids being below 7 and bases above 7.

• pH
• chemical symbol
• element
• chemical equation

A substance with a pH of 7, meaning it's neither acidic nor basic, like pure water.

• neutral
• chemical formula
• compound
• subscript