Elements, Compounds and Mixtures

Question 1

What are elements?

Answer 1

• consist of one type of atom only

Question 2

What are some examples of elements?

Answer 2

• copper
• aluminium
• iron

Question 3

What are compounds?

Answer 3

• substance made of two or more different elements which are chemically joined (bonded) together

Question 4

What is an example of a compound?

Answer 4

• carbon dioxide is a compound from a chemical reaction
• one carbon atom reacts with two oxygen atoms to form a molecule of carbon dioxide
• really hard to separate two original elements

Question 5

What is a mixture?

Answer 5

• no chemical bonds between the different parts of a mixture
• parts can be separated with physical methods like distillation

Question 6

Is a mixture a pure substance?

Answer 6

• not a pure substance
• because it does not make up a single element or compound