G8 Physical Science - Revision

What is the only sub-atomic particle that moves?

• proton

• electron

• neutron

What is the electronic configuration of Mg?

• 2, 2

• 2, 8, 2

What is correct about the trends for Group I as the elements go up the group?

• The softness increases

• The melting point increases

Group VIII elements are also known as

• noble gases

• alkali metals

What type of reaction does the graph represent?

• Endothermic

• Exothermic

What type of process is melting?

• Endothermic

• Exothermic

• metal hydroxide + hydrogen

• metal carbonate + hydrogen

• water

• rust

What is the difference between a base and an alkali?

• Alkalis are soluble in water.

  Bases are insoluble in water.

• Both do not react with acids.

What is the symbol for Mg when it loses 2 electrons?

• Mg^2-

• Mg²⁺