C1.1- How many atoms does an element contain?

• 0

• 1

• More than 1

• Any number

C1.1- How many types of atom does an element contain?

• 0

• 1

• More than 1

• Any number

C1.1- How can you tell whether a chemical is an element?

• It is coloured

• It is on the Periodic Table

• It is unreactive

• It is a well-known chemical

C1.1- Which of these is an element?

• Carbon dioxide

• Water

• Methane

• Nitrogen

C1.1- Which of these is not an element?

• Hydrogen

• Helium

• Oxygen

• Steam

C1.1- Which of the following images does not represent an element?

• 
• 
• 
• 

C1.1- Which of the following elements is not diatomic? (Diatomic means atoms are chemically bonded into pairs)

• Hydrogen

• Helium

• Oxygen

• Chlorine

C1.1- What is the definition of a compound?

• A molecule that contains at least 2 atoms

• A molecule that contains at least 2 types of atom

• A molecule containing only 1 type of atom

• A molecule that contains 2 types of atom

C1.1- Which of the following is not a compound?

• Carbon

• Carbon monoxide

• Carbon dioxide

• Carbon tetrafluoride

C1.1- Which of the following is a compound?

• Air

• Water

• Salt water

• Iron