2.6 Compounds

What is the compound that makes up the white part of teeth called enamel?

• Carbon monoxide

• Carbon dioxide

• Sodium chloride

• Calcium phosphate

What is the property of a compound in comparison to the properties of the elements in it?

• It has stronger properties than the elements

• It has weaker properties than the elements

• It has different properties from the elements

• It has the same properties as the elements

What is a molecule?

• A particle made up of different types of atoms

• A particle made up of one type of atom

• A particle made up of weakly joined atoms

• A particle made up of two or more atoms strongly joined together

What is a compound?

• A compound is a substance that is made up of atoms of two elements strongly joined together.

• A particle made up of one type of atom

• A particle made up of weakly joined atoms

• A compound is a substance that is made up of atoms of two elements or more strongly joined together.

What is the difference between elements and compounds?

• An element has two or more types of atom, while a compound has two or more types of cells.

• An element has two or more types of atom, while a compound has one type of atoms.

• An element has one type of atom, while a compound has two or more types of atoms.

In table salt, which element is a shiny metal, and fizzes in water

• Sodium.

• Chlorine.

• Oxygen.

• Carbon.

In table salt, which element is a green, smelly, poisonous gas at 20 ºC.

• Sodium.

• Chlorine.

• Oxygen.

• Carbon.

In Carbon monoxide CO, which element is solid at 20 ºC.

• Sodium.

• Chlorine.

• Oxygen.

• Carbon.

In Carbon monoxide CO, which element is a colourless gas at 20 ºC.

• Sodium.

• Chlorine.

• Oxygen.

• Carbon.

What is the compound known as table salt?

• Carbon monoxide

• Sodium chloride

• Water

• Carbon dioxide