Groups of the periodic table

The periodic table is arranged in order of increasing:

• number of neutrons

• number of protons

• mass number

• atomic numner

Within the periodic table the groups are the ​ (a)   and the periods are the ​ (b)   . Atoms with the same number of shells of electrons are placed in the same ​ (c)   and atoms with the same number of electrons in the outside shell are placed in the same ​ (d)   .

• columns
• rows
• period
• group

Group 0 elements are known as the:

• Alkali metals

• Transition metals

• Halogens

• Noble gases

Which of the following statements about the noble gases is true?

• They are very reactive

• They are very unreactive

• They need to lose or gain electrons

• They have a full outer shell of electrons

Match up the properties/reactions

• React with Group 1 metals

• Group 7

• Will react with water and oxygen

• Group 0

• Low density, unreactive

• Transition metals

• Make coloured compounds, are catalysts

• Group 1 metals

A Group 1 element is cut with a knife. You would see:

• It starts dull and goes shiny

• It starts shiny and goes dull

• It goes on fire

• It melts into a ball

If a Group 1 element is added to water, it moves around on the surface, melts into a ball, effervesces, burns with a lilac flame, and quickly disappears. What element is this?

• Lithium

• Sodium

• Potassium

• Rubidium

Select all the observations you would expect to make if you added sodium to water:

• Moves around on surface of water

• Effervescence

• Melts into a ball

• Sets on fire

The group 1 metals get​ (a)   reactive as you go down the group. This is because there are ​ (b)   shells of electrons, so the outer electron being ​ (c)   is ​ (d)   from the nucleus and less strongly ​ (e)   so easier to lose.

• more
• less
• lost
• further
• attracted
• gained
• closer

When a group 1 metal reacts with a group 7 element it makes:

• An acid

• A gas

• A salt

• Water