Classifying Matter Review/Test

Front

What is the basic particle from which all elements are made?

Back

Atom

Front

What do we call a group of two or more atoms held together by chemical bonds?

Back

Molecule

Front

How many molecules of water are present in 2H₂O?

Back

2

Front

What is anything that has mass and takes up space?

Back

Matter

Front

What is a characteristic of a substance that can be observed directly or measured without changing the identity of the substance?

Back

Physical property

Front

What is a substance made of two or more different elements that are chemically bonded together?

Back

Compound

Front

What is the term for a change that alters the identity of a substance?

Back

Chemical change

Front

What is the term for a property that can be observed without changing the substance's identity?

Back

Physical property

Front

What is the smallest unit of a chemical compound?

Back

Molecule

Front

What is the term for a pure substance that cannot be broken down into simpler substances?

Back

Element