Group 1

Question 1

What are the elements in group 1 also called?

Answer 1

Alkali metals

Question 2

How many electrons are in the outer shell of group 1 elements?

Answer 2

one

Question 3

Name 5 physical properties of alkaline metals

Answer 3

1. Very reactive
2. Shiny and soft
3. Good conductors of heat and electricity
4. Very low melting and boiling points
5. Low density

Question 4

Name 3 chemical properties of group 1 elements:

Answer 4

1. Very reactive
2. Have 1 electron in the outer shell
3. When reacting with water, they produce a metal hydroxide and hydrogen.

Question 5

alkali metal + water

Answer 5

metal hydroxide and hydrogen

Question 6

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

Answer 6

Reactivity increases down the group

Question 7

Why does reactivity increase as you go down the group?

Answer 7

Question 8

Name some elements in group 1

Answer 8

Question 9

Which element is more reactive - Lithium or Rubidium?

Answer 9

Question 10

Answer 10

A

Question 11

Answer 11

Potassium because it is most reactive with air since it is most furthest down the periodic table out of these 3 group 1 elements

Question 12

Why are group 1 metals also called alkali metals?

Answer 12

Alkali metal + water> metal hydroxide + hydrogen

The metal hydroxide dissolve in the water to give alkaline solutions

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Group 1

Question 17

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Answer 20

Question 21

1st element:

Answer 21

Hydrogen (H)