Reactivity

Question 1

How are group 1 elements stored as a result of them being highly reactive to oxygen

Answer 1

They are stored in oil

Question 2

How does the reactivity of group 1 metals increase

Answer 2

From top to bottom in a group

Question 3

How do alkali metals react with water

Answer 3

They react with water to form metal hydroxides and hydrogen gas

Question 4

How does lithium react with water

Answer 4

• reacts fast
• lithium floats on water
• no flame is seen

Question 5

How does sodium react with water

Answer 5

• reacts very fast
• sodium melts and burns with a yellow flame
• the melted sodium moves around over the water

Question 6

How does Potassium react with water

Answer 6

• reacts

- potassium melts and burns with a purple flame

Question 7

What is the formula when alkali metals react with water

Answer 7

2X(s) + 2H2O(l) —> 2XOH(aq) + H2(g)

Question 8

How do alkali metals react with oxygen

Answer 8

The react with oxygen to form metal oxides

Question 9

What is the formula for when alkali metals react with oxygen

Answer 9

4X(s) + O2(g) —> 2X2O(s)

Question 10

How do alkali metals react with halogens

Answer 10

They react with halogens to form metal halides

Question 11

What is the formula for when alkali metals react with halogens

Answer 11

2X(s) + Y2(g) —> 2XY(s)

Question 12

How do alkaline Earth metals react with water

Answer 12

They form metal oxides and hydrogen

Question 13

What is the formula for when alkaline earth metals react with water

Answer 13

X(s) + 2H2O(l) —> X(OH)2(aq) + H2(g)

Question 14

How do alkaline earth metals react with oxygen

Answer 14

They form metal oxides

Question 15

What is the formula for when alkaline earth metals react with oxygen

Answer 15

2X(s) + O2(g) —> 2XO(s)

Question 16

How do alkaline earth metals react with halogens

Answer 16

The form metal halides

Question 17

What is the formula for when alkaline earth metals react with halogens

Answer 17

X(s) + Y2(g) —> XY2(s)

Question 18

How are halogens found in nature

Answer 18

Halogens are found in nature and diatomic molecules

Question 19

What is fluorine

Answer 19

A light yellow toxic gas

Question 20

What is chlorine

Answer 20

A light green poisonous gas

Question 21

What is bromine

Answer 21

A brownish liquid that is highly volatile and toxic

Question 22

What is iodine

Answer 22

A shiny black solid and forms a haze when it’s heated

Question 23

How do halogens react with hydrogen

Answer 23

The form hydrogen halides

Question 24

What is the formula for when hydrogen reacts with a halogen

Answer 24

H2(g) + Y2(g) —> 2HY(g)

Question 25

How do halogens react with alkali metals

Answer 25

The form metal halides

Question 26

What is the formula for when halogens react with alkali metals

Answer 26

2X (s) + Y2(g) —> 2XY (s)

Question 27

How do halogens react with alkaline earth metals

Answer 27

The form metal halides

Question 28

What is the formula for when alkaline earth metals react with halogens

Answer 28

X(s) + Y2(g) —> XY2(s)

Question 29

What is the noble gases reactivity

Answer 29

Noble gases are inactive monatomic gases with completed outer energy levels

Question 30

How do noble gases react with water

Answer 30

They are insoluble in water

Question 31

What colour are noble gases

Answer 31

They are colourless