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Question 1

What does the Group Number tell you about the electrons in an element?

Answer 1

Group Number = Number of electrons in outer energy level / shell.

Question 2

How were elements in the early periodic tables arranged?

Answer 2

By atomic weights

Question 3

Who designed a Periodic Table that left gaps for undiscovered elements?

Answer 3

Mendeleev

Question 4

What charge do non-metal ions (except Hydrogen) have?

Answer 4

Negative

Question 5

What charge do metal ions have?

Answer 5

Positive

Question 6

Q. Where are metals found on the Periodic Table?

Q. Where are the non-metals on the Periodic Table?

Answer 6

• Metals are on the Left-Hand Side of the Periodic Table
• Non-metals are on the Right-Hand Side of the Periodic Table

Question 7

What are the elements in Group 0 called?

Answer 7

Noble Gases

Question 8

In terms of electron arrangement, explain why noble gases are unreactive.

Answer 8

They have a full outer shell of electrons. (Helium has 2 electrons in outer shell, all other noble gases have 8 electrons in outer shell).

Question 9

How does the boiling point of noble gases change as you go down the group?

Answer 9

It increases

Question 10

What is the name given to the elements in Group 1 of the Periodic Table?

Answer 10

Alkali Metals

Question 11

Name the products produced when sodium reacts with:

a) Chlorine
b) Oxygen
c) Water

*you will have to be able to do this for the first three alkali metals (lithium, sodium and potassium).

Answer 11

a )Sodium Chloride

b) Sodium Oxide
c) Sodium Hydroxide + Hydrogen

Question 12

What happens the the reactivity of alkali metals as you go down the group?

Answer 12

Reactivity Increases

Question 13

What are the elements in Group 7 of the Periodic Table called?

Answer 13

Halogens

Question 14

Which group of elements form molecules made up of pairs of atoms?

Answer 14

The Halogens (Group 7)

Question 15

Q. What happens to the melting and boiling points of Halogens as you go down the group?

Q. What happens to the reactivity of the Halogens as you go down the group?

Answer 15

• Melting and boiling points increase
• Reactivity decreases

Question 16

Q. Name the type of reaction shown by the word equation below.

chlorine + sodium bromide → sodium chloride + bromine

Q. What does this reaction tell you about the reactivity of chlorine and bromine?

Answer 16

• Displacement Reaction
• Chlorine is more reactive than bromine (or vice versa)

Question 17

Separate Q. What are the metals in the middle block of the periodic table called?

Answer 17

Transition Metals

Question 18

Separate Q. Compare transition metals and alkali metals in terms of the following properties:

a )Strength

b) Hardness
c) Melting Points
d) Density
e) Reactivity

Answer 18

a) Transition metals are stronger (or vice versa)
b) Transition metals are harder (or vice versa)
c) Transition metals have higher melting points (or vice versa)
d) Transition metals have a higher density (or vice versa)
e) Transition metals are less reactive (or vice versa)

Question 19

Separate Q. Name the metals that make useful catalysts.

Answer 19

Transition metals

Question 20

Separate Q. Name the metals that make coloured compounds.

Answer 20

Transition Metals

Question 21

Separate Q. Name the metals that can have ions with different charges.

Answer 21

Transition Metals

(e.g. an iron ion can be Fe2+ or Fe3+)