Classification of Matter

All the matter around us is classified into two major groups…

• elements & compounds

• atoms & molecules

• pure substances & mixtures

A pure substance is a type of matter that contains _____

• 2 or more kinds of atoms or molecules

• 1 kind of atom or molecule

_____ is an example of a pure substance

• cereal

• water

• salt

• gold

Select all that are true of ELEMENTS

• made of 2 or more atoms

• are the simplest form of matter

• can be found on the Periodic Table

• O₂ (oxygen) is an example

Select all that are true of COMPOUNDS

• made of 2 or more atoms bonded together

• can be found on the Periodic Table

• NaCl is an example

• simplest form of matter

True or False: elements AND compounds are pure substances.

• True

• False

What is this?

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

What is it?

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Dry ice is solid carbon dioxide, or CO2. Dry ice may be used as a cooling agent and contains two oxygen atoms bonded to a carbon atom. Dry ice is a ___________________ .

• pure substance

• mixture

Tags

NGSS.MS-PS1-1

Cake batter is a substance that may contain flour, eggs and sugars mixed by hand or with an electric mixer. Cake batter is a ___________________ .

• pure substance

• mixture