Diversity of Matter: Chemical Properties

Which of these substances is not an element?

• mercury

• uranium

• salt

• bromine

The vertical columns in the periodic table are called ________.

The periodic table can be classified into metals and non-metals. Which of the elements below are non-metals?

• argon

• nitrogen

• calcium

• nickel

How many elements does magnesium carbonate contain?

• 2

• 3

• 4

• 5

An element is a substance that cannot be broken down into two or more substances by _________ methods.

Calcium nitrate crystals are soluble in water. In this example, calcium nitrate is the ________ while water is the ________.

• solute; solvent

• solvent; solute

• solvent; solution

• solution; solvent

Which of these actions would not increase the rate at which sugar crystals dissolve in water?

• Increase the speed of stirring.

• Increase the temperature of the water.

• Increase the amount of water.

• Increase the size of the sugar crystals.

The chemical formula of propanoic acid is given below. What are the elements that make up propanoic acid?

• carbon & hydrogen

• copper, helium & oxygen

• carbon, hydrogen & oxygen

• cobalt, carbon, hydrogen & oxygen

When limestone is heated, it is broken down into calcium oxide. Carbon dioxide is also released. What is limestone?

• a mixture

• an element

• a compound

• a mixture of elements

Elements in the same _________ have similar physical and chemical properties.