F321-Ions, Ionic Formulae & Equations

Question 0

Define oxidation number

Answer 0

A measure of the number of electrons that an atom uses to bond with atoms of a different element

Question 1

What is formed when an atom loses or gains electrons?

Answer 1

Ions

Question 2

What is the charge of Ag(silver)

Answer 2

It is + rather than 2+

Question 3

What does the group number tell you?

Answer 3

The charge of the element (oxidation number)

Question 4

Show the formula of hydroxide

Answer 4

OH-

Question 5

Show the formula of ammonium

Answer 5

NH4+

Question 6

Show the formula of Sulfate (VI)

Answer 6

SO4^2-

Question 7

Show the formula of Phosphate(V)

Answer 7

PO4^3-

Question 8

Show the formula of Carbonate

Answer 8

CO3^2-

Question 9

Show the formula of Nitrate (V)

Answer 9

NO3-

Question 10

Predict the formula of Calcium Carbonate

Answer 10

CaCO3

Question 11

Predict the formula of Silver(I) Iodide

Answer 11

AgI

Question 12

Name NH4Cl

Answer 12

Ammonium Chloride

Question 13

Name KI

Answer 13

Potassium Iodide

Question 14

Name CaO

Answer 14

Calcium Oxide

Question 15

Is AgCl soluble in dilute NH3?

Answer 15

Yes it’s soluble

Question 16

Is AgCl soluble in conc.NH3?

Answer 16

Yes it’s soluble

Question 17

Is AgBr soluble in dilute NH3?

Answer 17

No, AgBr is insoluble

Question 18

Is AgBr soluble in conc.NH3?

Answer 18

Yes It is soluble

Question 19

Is AgI soluble in dilute NH3?

Answer 19

No, it is insoluble

Question 20

Is AgI soluble in conc.NH3?

Answer 20

No, it is insoluble

Question 21

What colour is AgCl?

Answer 21

White

Question 22

What colour is AgBr?

Answer 22

Cream

Question 23

What colour is AgI?

Answer 23

Yellow

Question 24

Write the equation when a soluble M2CO3 reacts with H2SO4

Answer 24

H2SO4(aq) + M2CO3(aq) > H2O(l) + CO2(g) + M2SO4(aq)

Question 25

What is formed when Barium Chloride or Calcium Chloride is added to Sulfate ions?

Answer 25

White precipitate

Question 26

Define Alkali

Answer 26

A soluble base that release OH- ions when in solution

Question 27

Define Acid

Answer 27

Release H+ ions in solution (proton donor)

Question 28

How do you test for an acid/alkali

Answer 28

Place litmus paper in the solutoom- if it turns red it's an alkali, if it turns blue it's an acid

Question 29

Describe in words how a metal, reacts with protons

Answer 29

The metal loses electrons to become positive and the H+ ion from the acid gains these electrons to become H2. It is a redox reaction as it has gained electrons and the metal has been oxidised

Question 30

What type of reaction is it when calcium change decomposes with heat?

Answer 30

Thermal decomposition

Question 31

Give the formula of a chloride ion

Answer 31

Cl-

Question 32

Give the formula of a magnesium ion

Answer 32

Mg2+

Question 33

Give the formula of a Sulfate ion

Answer 33

SO4^2-

Question 34

Give the formula of a Nitrate ion

Answer 34

NO3-