Particles and Types of Matter

Does a pure substance _?

• have many different types of atoms

• has one type of atom

Do pure substances have chemical and physical properties that change?

• Yes

• No

What are the two types of pure substances?

• Atoms

• Compounds

• Elements

• Molecules

What is an element?

What is a compound?

What is mud?

• An element

• A compound

• A mixture

• A great ingredient for pies

What is an atom?

• Made of more than 1 type of element

• Smallest part of an element

• Held together by chemical bonds

What is a molecule?

• Smallest part of an element

• Pure substance

• Two or more atoms held together by a chemical bond

• always made of more than 1 type of element