Major Ideas: reactions

Question 0

When is a chemical rxn said to be ‘balanced’?

Answer 0

When the number of atoms of each element on each side and charge are equal

Question 1

What are chemical reactions?

Answer 1

Processes in which chemical changes occur and they are characterised by the formation of new substances

Question 2

Kelvin temps. =

Answer 2

Celsius + 273

Question 3

What is Boyle’s law?

Answer 3

Volume is indirectly proportional to pressure under constant temperature and mass of ga

Question 4

What is Charles’ law?

Answer 4

Volume is directly proportional to temperature when measured at constant temperature and mass

Question 5

What is Avogadro’s hypothesis?

Answer 5

Volume is directly proportional to number of moles under constant temperature and pressure

Question 6

What is Gay-Lussac’s law?

Answer 6

Volume ratio of gases are equal to mole ratio in a balanced equation

Question 7

How do you work our % purity?

Answer 7

Mass of pure substance
_________________________ x100
Mass of impure substance

Question 8

How do you work out %yield?

Answer 8

Mass of product actually obtained
________________________________ x100
Theoretical expected product mass