Elements, Compounds and Mixtures

What are the building blocks of all materials?

• compounds

• molecules

• elements

• atoms

What is a substance made up of only one type of atom?

• molecule

• compound

• element

• mixture

What is a compound?

• a substance made up of only one type of atom

• a substance made up of two or more different elements chemically combined

• a substance made up of two or more different substances mingled together but not chemically combined

Which of these is an example of a compound?

• oxygen

• carbon

• water

• nitrogen

What is the definition of a mixture?

• a substance made up of two or more elements chemically combined

• a substance made up of only one type of atom

• two or more different substances mingled together but not chemically combined

Which of following are elements?

• b only

• d only

• a and c

• b and d

How is a molecule formed?

• through magnetic bonding

• through physical bonding

• through chemical bonding

• through nuclear bonding

Which of the following are compounds

• b only

• d only

• a and c

• a only

Which of the following is a mixture?

• a and c

• d only

• b only

• b and d

How many different elements are there in CO₂?

• 1

• 2

• 3