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Question 1

how are salts formed

Answer 1

When a metal atom transfers its outer electron to a non-metal atom (like a group 7 atom), salts are formed.
The result is a compound where all the ions have a full outer shell.

Question 2

transition metal properties

Answer 2

greater strength and hardness than alkali metals
higher melting points-good for cooking
less reactive-iron takes weeks to rust
more mass

Question 3

transition metal special properties

Answer 3

can form ions with different possible charges e.g. fe^2+, fe^3+

can form different colour compounds

transition metals as catalysts
iron-used in havre process,production of ammonia
platinum and rhodium are used in catalytic converters for cars

Question 4

relative atomic mass

Answer 4

average mass of an element

it’s weighted by the abundance of its isotopes

Question 5

relative atomic mass equation

Answer 5

(isotopic abundance * relative mass)/100

Question 6

what is crystallisation

Answer 6

a separation technique used to separate dissolved solids from a solvent

can make things pure