Chemistry: Year 9 Term 4: Chemical Calculations

?
Define atomic mass - Ar (1)
Total mass of the nucleons in an atom (relative to 1/12 mass of C12)
1 of 18
Define relative formula mass - Mr (1)
The masses of the atoms in a formula added together
2 of 18
Define mole (1)
A measure of the amount of a substance
3 of 18
What is Avogadro's Constant? (2)
The amount of particles in a mole - 6.02x10 to the power of 23
4 of 18
1 mole of carbon weighs how much? (1)
12g
5 of 18
Balaning symbol equations tells us what? (1)
The ratio of moles in the reaction
6 of 18
Define conservation of mass (1)
No mass is lost or gained during a chemical reaction
7 of 18
Define limiting reactant (2)
The reactant that gets used up first and decides when the reaction is finished
8 of 18
Define theoretical yield (1)
How much product one should be able to make
9 of 18
Define actual yield (1)
How much product one actually makes
10 of 18
Define percentage yield (2)
Compares actual and theoretical yield (% of theoretical yield produced)
11 of 18
Identify 2 factors affecting yield (2)
Product left in apparatus; Reversible reactions not complete
12 of 18
What is concentration measured in? (1)
mol/dm cubed
13 of 18
What is volume measured in? (1)
dm3
14 of 18
1 dm3 is equal to ... cm3? (1)
1000
15 of 18
What is the purpose of titration? (2)
A method of analysing solution concentration
16 of 18
How are these carried out? (6)
1) Add alkali and indicator to conical flask 2) Add acid to burette and record volume 3) Add acid to alkali & swirl 4) Stop when indicator changes colour 5) Record acid volume and calculate difference 6) Repeat until results are concordent
17 of 18
Define molar gas volume (2)
The amount of space a mole of gas takes up (24dm3)
18 of 18

Other cards in this set

Card 2

Front

Define relative formula mass - Mr (1)

Back

The masses of the atoms in a formula added together

Card 3

Front

Define mole (1)

Back

Preview of the front of card 3

Card 4

Front

What is Avogadro's Constant? (2)

Back

Preview of the front of card 4

Card 5

Front

1 mole of carbon weighs how much? (1)

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Calculations, moles and yield resources »