ELEMENTS, COMPOUNDS & MIXTURES

Which of the following is made up only of one type of atom?

• Aluminum foil

• Tomato ketchup

• A crystal of table salt

• A drop of water

A compound is a substance that ________

• contains two or more elements physically combined together in a fixed ratio

• contains only metallic elements chemically joined together.

• is made up of two or more elements chemically joined together.

• is made up of only element.

This diagram represents ____

• an element

• a compound

• an atom

• a mixture

One of the following substances is not an element. Which one is it?

• Mercury

• Nitrogen

• Water

• Hydrogen

What is the chemical symbol of the element phosphorus?

• F

• Ph

• Fe

• P

Which one of the following substances is not a mixture?

• Petrol

• Air

• Water

• Crude oil

Which one of the following elements has the symbol C?

• Chlorine

• Calcium

• Copper

• Carbon

Which one of the following elements is used in window and door frames?

• Nitrogen

• Potassium

• Carbon

• Aluminum

What two elements make up common table salt?

• Sodium and oxygen

• Chlorine and sodium

• Chlorine and hydrogen

• Sodium and hydrogen

Which one of the following substances is a compound?

• Oxygen

• Sodium fluoride

• Hydrogen

• Iron