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B1 - Moles, Formulae and equations

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

Define empirical formula

Back (Answer)

the simplest whole number ratio of atoms of each element present in a compound

#2
Front (Question)

Define molecular formula

Back (Answer)

the number and type of atoms of each element in a molecule

#3
Front (Question)

What is a hydrated compound?

Back (Answer)

a hydrated compound is crystalline and contains water molecules

#4
Front (Question)

What is an anhydrous compound?

Back (Answer)

an anhydrous compound contains no water molecules

#5
Front (Question)

The ideal gas equation

Back (Answer)

pV=nRT

#6
Front (Question)

What does ‘p’ stand for in the ideal gas equation?

Back (Answer)

pressure in Pa

#7
Front (Question)

What does ‘V’ stand for in the ideal gas equation?

Back (Answer)

volume in m3

#8
Front (Question)

What does ‘T’ stand for in the ideal gas equation?

Back (Answer)

temperature in K

#9
Front (Question)

What does ‘n’ stand for in the ideal gas equation?

Back (Answer)

amount in mol

#10
Front (Question)

What does ‘R’ stand for in the ideal gas equation?

Back (Answer)

gas constant

#11
Front (Question)

Pressure conversions

Back (Answer)

kPa –> Pa: x10^3 Pa –> kPa: x10^-3

#12
Front (Question)

Volume conversions

Back (Answer)

cm3 –> m3: x10^-6 m3 –> cm3: x10^6

#13
Front (Question)

Temperature conversions

Back (Answer)

Celsius –> K: +273 K –> Celsius: -273

#14
Front (Question)

What is the atom econoy?

Back (Answer)

the atom economy of a chemical reaction is the percentage proportion of reactants that are converted into useful products

#15
Front (Question)

Atom economy equation

Back (Answer)

atom economy = sum of molar masses of desired products/sum of molar masses of all products x 100%

#16
Front (Question)

What does a high atom economy mean?

Back (Answer)

a high atom economy is efficient and produce little waste –> sustainability favours reactions with high atom economy - fewer raw materials are used and less waste is produced

#17
Front (Question)

Equation for percentage yield

Back (Answer)

percentage yield = actual yield/theoretical yield x 100%

#18
Front (Question)

What are acids?

Back (Answer)

H+ donors - proton donor

#19
Front (Question)

Examples of strong acids

Back (Answer)

hydrochloric acid sulfuric acid nitric acid

#20
Front (Question)

What do strong acids do when dissolved in water?

Back (Answer)

strong acids fully dissociate when dissolved in water

#21
Front (Question)

Example of a weak acid

Back (Answer)

ethanoic acid

#22
Front (Question)

What do weak acids do when dissolved in water?

Back (Answer)

weak acids partially dissociate when dissolved in water

#23
Front (Question)

What are bases?

Back (Answer)

H+ acceptors - proton acceptors

#24
Front (Question)

What are the different types of bases?

Back (Answer)

metal oxides metal hydroxides metal carbonates alkalis