metals

Question 1

metals

Answer 1

high density with atoms closely packed together. outer electrons move between atoms > lattice

Question 2

metallic bonding

Answer 2

electrostatic attraction between positive ions and delocalised electrons

Question 3

why are metals good conductors of heat and electricity

Answer 3

have delocalised electrons and their movement passes on the energy during conduction of heat

Question 4

oxidation reaction

Answer 4

reaction where reactant loses electron(s)

Question 5

how does soluble salt form

Answer 5

when excess metal is reacted with an acid

Question 6

reduction reaction

Answer 6

when reactant gains electron(s)

Question 7

redox reactions

Answer 7

electrons are transferred from one reactant to another

Question 8

decomposition reaction

Answer 8

breaking down a compound into its elements

Question 9

electrolysis

Answer 9

decomposition of an ionic compound into its element by using electricity

Question 10

reactive metals

Answer 10

extracted by electrolysis (aluminium, sodium)

Question 11

medium reactivity metals

Answer 11

extracted by heating their compounds with carbon (copper, iron)

Question 12

low reactivity metals

Answer 12

extracted using heat alone (silver)

Question 13

very unreactive metals

Answer 13

found uncombined in nature (gold)