Conversions Quiz

Question 1

Stoichiometry

Answer 1

The mathmatics of the balanced equation
Calculations of quantaties of materials consumed and produced in chemical reactions

Question 2

Composition Stoichiometry

Answer 2

Mass relationships of elements in compound

Question 3

Reaction Stoichiometry

Answer 3

Mass relationships between reactants and products in a chemical reaction

Question 4

Mole to Mole Calculations

Answer 4

The coefficients in the balanced equation represent the smallest whole number mole ratio between reactants and products

Question 5

Mole Ratio

Answer 5

A balanced equation’s coefficients telling us the ratio between reactants and products

Question 6

Steps to Mole Ratio

Answer 6

1. Start with the given value and make sure equation is balanced
2. Immedietly convert to moles
3. Convert moles of given to moles of unknown
4. End with unknown moles or convert to unit of unknown

Question 7

Steps to Mass Conversion

Answer 7

1. Convert grams to moles using molar mass of known value
2. Convert moles of known to moles of unknown using molar ratio
3. Convert unknown moles to grams using molar mass of unknown

Question 8

Gas Conversions

Answer 8

At STP all gases will have a volume of 22.4L
The gas ratio is equivalent to the molar ratio

Question 9

Important

Answer 9

Do not reduce conversions
Never use conversion factors for sig figs
Double molar mass for diatomics but not in volume
Every equality makes two conversion factors

Question 10

Other Conversions to Remember

Answer 10

Avagadro’s number 1 mole=6.02x10^23 representative particles
Molar mass xg=1 mole
Molar volume 22.4L=1 mole

Question 11

Ratio of Volumes

Answer 11

Only for gases

Question 12

Conserved

Answer 12

Total amount in reactants is equal to the total amount in products

Question 13

Conserved Quantaties

Answer 13

Mass
Atoms of an element

Question 14

Not Conserved Quantaties

Answer 14

Molecules
Moles
Volume