Chemistry Paper 1 focus

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Magnesium = Mg 2+
Nitrate = NO3 1-
Give the formula of magnesium nitrate.
Mg(NO3)2
1 of 15
Give the number of protons, neutrons and electrons in Potassium.
39
K
19
Protons = 19
Neutrons = 20
Electrons = 19
2 of 15
Give the equation used to work out percentage atom economy.
Mr of desired product divided by Mr of all reactants
x100
3 of 15
Give the equation used to find percentage abundance of an isotope.
(1st mass number x 1st abundance) + (2nd mass number x 2nd abundance)
ALL DIVIDED BY
(1st abundance + 2nd abundance)
4 of 15
Draw a fully labelled reaction profile for an exothermic reaction.
1) Straight line of reactants
2) Curve which finishes below reactant line
3) Straight line of products
4) Labelled activation energy from top of curve to reactants
5) Labelled overall energy change from reactants to products
5 of 15
Give 3 points to why graphite conducts electricity.
Each carbon has 3 bonds
It has delocalised electrons
Electrons can move freely between layers of carbon
6 of 15
Convert 3.867cm cubed to dm cubed
3.867cm cubed divided by 1000 = 0.003867dm cubed
7 of 15
Give the equation that links concentration, volume and moles.
Concentration = moles divided by volume
8 of 15
Give 3 points as to why hydrogen chloride is a gas at room temperature.
Made of small molecules
Intermolecular forces are weak
So requires little energy to overcome
9 of 15
Draw a fully labelled reaction profile for an endothermic reaction.
1) Straight line of reactants
2) Curve which finishes above reactant line
3) Straight line of products
4) Labelled activation energy from top of curve to reactants
5) Labelled overall energy change from reactants to products
10 of 15
Why might water + potassium be a hazardous reaction?
Violent reaction
11 of 15
Why are metal chlorides usually solid at room temperature?
Usually ionic
Their intermolecular forces are usually strong
12 of 15
How do you work out the limiting reactant?
Mass divided by Mr = moles
Lowest moles is the limiting reactant
Once that reactant is used up, the reaction stops
13 of 15
0.0056dm cubed is how many cm cubed?
5.6cm cubed
14 of 15
Why is a burette useful in measuring?
It measures drop by drop
15 of 15

Other cards in this set

Card 2

Front

Give the number of protons, neutrons and electrons in Potassium.
39
K
19

Back

Protons = 19
Neutrons = 20
Electrons = 19

Card 3

Front

Give the equation used to work out percentage atom economy.

Back

Preview of the front of card 3

Card 4

Front

Give the equation used to find percentage abundance of an isotope.

Back

Preview of the front of card 4

Card 5

Front

Draw a fully labelled reaction profile for an exothermic reaction.

Back

Preview of the front of card 5
View more cards

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