Reactivity across period table

Question 1

Define alkaline

Answer 1

A solution with a Ph above 7

Question 2

Define oxidation

Answer 2

LOss of electrons to form an atom

Question 3

Define Allotrope

Answer 3

Two or more different physical forms that an element can exist in. E.g. Graphite and diamond are carbon allotropes.

Question 4

Define Amphoteric

Answer 4

Substances that can act as both acids and bases.

Question 5

Define Base

Answer 5

Cannot dissolve in water

Question 6

Define Alkali

Answer 6

Base can dissolve in water

Question 7

What solution do group one elements create when the product is dissolved in water.

Answer 7

It produces an alkaline solution.

Question 8

When aluminium reacts with oxygen it creates an ______ substance

Answer 8

Amphoteric substance

Question 9

2C (s) + O₂ (g) —> 2CO (g) is an example of what type of combustion?

Answer 9

Incomplete combustion

Incomplete combustions is when soot is produced.

Question 10

How do group 7 elements react with oxygen?

Answer 10

They have vigorously react but form unstable oxides.

Question 11

What are the three patterns across the periodic table for reactions with oxygen?

Answer 11

1- Products change from solids to gases as you go across the period.
2-As you go along the period table the products go from alkaline, amphoteric to acids.
3- Ionic to giant covalent to small covalent.

Question 12

What causes the three patterns across the periodic table?

Answer 12

All due to changes in bonding across the period

Question 13

Na₂O₂ (s) has a _______ structure

Answer 13

Crystalline

Question 14

Write and balance the equation for
1 - 2Li₂O (s)
2- 2Al₂O₃ (g)
3- 2BeO (s)

Answer 14

1- 4Li (s) + O₂ (g) —-> 2Li₂O (s)
2-4Al (s) + 3O₂ (g) —-> 2Al₂O₃ (g)
3-2Be (s) + O₂ (g) —-> 2BeO (s)

Question 15

What are O₂ & O₃ ?

Answer 15

Allotropes of Oxygen

Question 16

When the equation for phosphorus is P₄O₁₀ (s) there is lots of _____ to burn

Answer 16

Oxygen

Question 17

What’s the most reactive in the reactivity series?

Answer 17

Potassium

K

Question 18

What’s the least reactive in the reactivity series?

Answer 18

Platinum

Question 19

List of most to least reactive groups across the periodic table.

Answer 19

Group 1
Group 2
Group 3
Group 4
Transition metals

Question 20

Define displacement reaction

Answer 20

A chemical reaction in which a more reactive element displaces a less reactive element from its compound

Question 21

Reactivity series list

Answer 21

Potassium, Sodium, Calcium, Magnesium, Aluminium, Carbon, Zinc, Iron, Tin, Lead, Hydrogen, Copper, Silver, Gold, Platinum

Question 22

Displacement reaction
1 )Iron + copper sulphate ->
2)Copper + magnesium sulphate ->
3)Calcium + iron sulphate ->

Answer 22

1) -> Iron sulphate + copper
2) ->Magnesium sulphate +copper
3) -> Calcium sulphate + iron