Matter

The substances in a mixture are _____ combined.

• chemically

• physically

Compounds are:

• pure substances, made of more than one element

• made of only one type of atom

• physically combined

• a. substances that can’t be broken down

The substances that make up a mixture:

• lose most of their properties

• keep most of their properties

• are chemically combined

An example of a homogeneous mixture would be:

• pizza

• sand

• salt water

• hydrogen

The substances that make up a compound:

• keep most of their properties

• lose most of their properties

• can be combined in any ratio

• are physically combined

what is an example of a heterogeneous mixture?

• cool-aid

• chocolate milkshake

• pizza

Which one of the following is a pure substance?

• H₂O

• Sand

• Salt water

What is an alloy?

• a solution of ceramics

• a solution of metals

• a compound

• an element

Which one of the following is a physical change?

• water evaporating

• frying eggs

• iron rusting

Digestion is an example of:

• physical change

• chemical change