Complete chemistry C3 quiz

HideShow resource information
  • Created by: hannahb
  • Created on: 26-04-16 18:22
What does the group number of an atom represent?
The number of electrons on their outer shell/energy level
1 of 31
When inner electrons get in the way of the nuclear charge, weakening the attraction, this is called...?
Sheilding
2 of 31
What happens to Halogens (Group 7) as you go down the group?
The get less reactive
3 of 31
What is the weak called which forms when carbon dioxide reacts with the water in the atmosphere?
Carbonic Acid
4 of 31
Which dissolved ions cause hardness in water?
Calcium and Magnesium
5 of 31
Scale forms on the inside of pipes boilers and kettles when hard water is heated. What is this mostly made of?
Calcium Carbonate
6 of 31
A scaled kettle will mean what?
The water takes longer and more energy to boil- the scale acts as a thermal insulator
7 of 31
Which ions cause temporary hardness?
Hydrogencarbonate ions
8 of 31
What causes permanant hardness?
Sulfates
9 of 31
What is the difference between scale and scum?
Scale is made from mostly calcium and magnesiums carbonates which builds up on the inside of pipes, boilers and kettles, scum is what you get when hard water reacts with soap
10 of 31
What does not effect the postion of equilibrium within a reversible reaction?
Using a catalyst
11 of 31
What are the conditions for the Haber process?
200 atmospheres, 450 degrees celcius, iron catalyst
12 of 31
In the Haber process, why is the temperature used higher than the optimum temperature for producing the highest yield of ammonia??
Because it increases the rate of reaction, and the reactants are re-used
13 of 31
In an alcohol, which part is the functional group?
-OH
14 of 31
What are alochols useful as?
Solvents
15 of 31
Methylated spirit/Meths is ethanol with other chemicals added. It is posionous but colourless, so how do we make sure people don't drink it?
Purply-blue dye
16 of 31
Fucontional group of carboxylic acids?
-COOH
17 of 31
What happens if you react any acid(including carboxylic) with a carbonate?
A salt and carbon dioxide produced
18 of 31
The salts formed in reactions with carbonates and carboxylic acids end in...?
...anoate
19 of 31
How can you make ethanoic acid?
By oxidising ethanol
20 of 31
Carboxylic acids with longer chains of carbon atoms can be used to make what?
Soaps and detergents
21 of 31
Esters have the functional group -COO-, how are they formed?
From an alcohol and a carboxylic acid
22 of 31
What happens if you have a flammable vapour and a naked flame?
A flash fire
23 of 31
If a reaction has a negative energy change, is it exothermic or endothermic?
Exothermic
24 of 31
Burning hydrogen gas only produces water, but why is it not the perfect alternative to fossil fuels?
Its requires energy to seperate it from oxygen in water,and its explosive
25 of 31
Identifying metal ions, what are the colours shown when using a flame test for the ions in this order: Barium, Calcium, Potassium, Lithium, Sodium
Green, Brick-Red, Lilac, Crimson, Yellow
26 of 31
If you add sodium hydroxide when testing for metal ions, a white precipitate forms, but then redissolves, what ion is present?
Aluminium 3+
27 of 31
There are 3 solutions, a coloured precipitate forms in each with sodium hydroxide added, 1- Blue 2- Green 3-Brown, what ions were present in each of the solutions?,
1-Copper 2-Iron (2)+ 3-Iron (3)
28 of 31
Tetsing for negative ions: how do you test for carbonates?
Add a dilute acid, pass the gas produced through limewater- if turns cloudy then yes
29 of 31
How do you test for halides?
Add dilute nitric acid followed by silver nitrate solution and test the colour of the precipitate
30 of 31
How do you test for sulfate ions?
Add dilute hydrochloric acid, followed by barium chloride solution, if white precipitate formed(barium sulfate) then yes
31 of 31

Other cards in this set

Card 2

Front

When inner electrons get in the way of the nuclear charge, weakening the attraction, this is called...?

Back

Sheilding

Card 3

Front

What happens to Halogens (Group 7) as you go down the group?

Back

Preview of the front of card 3

Card 4

Front

What is the weak called which forms when carbon dioxide reacts with the water in the atmosphere?

Back

Preview of the front of card 4

Card 5

Front

Which dissolved ions cause hardness in water?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all Chemistry resources »