Trends with the Periodic Table

Question 1

What are group 1 (G1) metals known as?

Answer 1

Alkali metals

Question 2

G1: What type of density do they have?

Answer 2

Low

Question 3

G1: What are the first 3 elements in the group less dense than?

Answer 3

Water

Question 4

G1: What do they form when reacted with non-metals?

Answer 4

Ionic Compounds

Question 5

G1: What charge does the ion have?

Answer 5

+1

Question 6

G1: What do they release when reacted with water?

Answer 6

Hydrogen

Question 7

G1: What colour are the solid ionic compounds they make?

Answer 7

White

Question 8

G1: What do their ionic compounds do in water?

Answer 8

Dissolve to form colourless solutions

Question 9

G1: What other thing do they form?

Answer 9

Hydroxides

Question 10

G1: What do the hydroxides do?

Answer 10

Dissolve, forming ALKALINE solutions

Question 11

G1: What happens to the reactivity as you go down the group?

Answer 11

Increases

Question 12

G1: What happens to melting and boiling points as you go down the group?

Answer 12

The get lower

Question 13

How do group 1 elements compare with transition metals (TM) with melting points?

Answer 13

TM have higher melting points (excluding mercury)

Question 14

How do group 1 elements compare with transition metals for density?

Answer 14

TM have higher densities

Question 15

How do group 1 elements compare with transition metals for strength?

Answer 15

TM stronger (and harder)

Question 16

How do group 1 elements compare with transition metals for reactivity?

Answer 16

TM much less reactive

Question 17

How do group 1 elements compare with transition metals for reacting with water and oxygen?

Answer 17

TM don’t react as vigorously with water and oxygen

Question 18

TM: What is odd about some of the ions?

Answer 18

They have different charges, ie iron 2+, iron 3+

Question 19

TM: What type of compounds do they form?

Answer 19

Coloured

Question 20

TM: What are they useful as?

Answer 20

Catalysts

Question 21

What are Group 7 (G7) elements known as?

Answer 21

The Halogens

Question 22

G7: What do they form when reacted with metals?

Answer 22

Ionic compounds

Question 23

G7: What’s the charge of a halide ion?

Answer 23

-1

Question 24

G7: What happens to the reactivity as you go down the group?

Answer 24

It decreases

Question 25

G7: What happens to melting and boiling points as you go down the group?

Answer 25

They increase

Question 26

G7: When can a more reactive halogen displace a less reactive one?

Answer 26

From an aqueous solution of its (less reactive ones’) salt

Question 27

G1: Why does reactivity increase as you go down the group?

Answer 27

There are more electron shells, so electrons are more easily lost

Question 28

G7: Why does reactivity decrease as you go down the group?

Answer 28

There are more electron shells, so electrons are less easily gained