Compound and Mixture - Y7

The chart below lists some substances and their symbols. How many of these substances are examples of elements?

• 1

• 2

• 3

• 4

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

• I

• II

• III

• IV

Humans absorb oxygen from the air they breathe in and exhale carbon dioxide gas, CO2. Carbon dioxide gas is

• an element made of carbon and oxygen atoms.

• a solution made of carbon and oxygen atoms.

• a compound of carbon and oxygen atoms.

• a mixture of carbon and oxygen atoms.

Beatriz wants to make a mixture out of her bowl of blueberries. Which of the following would turn her bowl of blueberries into a mixture?

• adding more blueberries to the bowl

• adding raspberries to the bowl

• cutting up the blueberries

• mashing the blueberries

Pure water is a ___________.

• element

• mixture

• compound

The substances that make up a mixture ________ their individual properties.

• lose

• share

• keep

• alter

A compound is made of ________ atoms. 

• big 
• similar 
• different 

Milk is a ________

• compound 
• mixture 
• element 

What is it?

• element

• mixture

• compound

• Mixture of elements

Which of these is an element?

• Salt

• Sea water

• Oxygen

• Coffee