Unit 2 Vocabulary

A tiny piece of matter that is too small to see

• matter

• atom

• molecule

• substance

To pull an object, even without touching it

• pull

• push

• attract

• observe

To mix evenly into an object, even without touching it

• dissolve

• explain

• mixing

• observe

Information that supports an answer to a question.

• explanation

• inference

• argument

• evidence

To describe how something works or why something happens

• evidence

• explain

• matter

• inference

Something you figure out based on observations and information you already know.

• inference

• information

• model

• argument

The stuff that things are made of.

• substances

• property

• mixtures

• matter

Matter that is made of more than one substance.

• atom

• substance

• mixture

• dissolving liquids

Something scientists make to answer about the real world

• model

• observe

• soluble

• argument

A group of atoms joined together in a particular way.

• molecule

• atom

• solution

• mixture