metals

Question 1

metallic bonding is the

Answer 1

electrostatic force of attraction between positively charged ions and delocalised electrons

Question 2

Metallic elements are conductors because

Answer 2

they contain delocalised electrons

Question 3

metal + oxygen

Answer 3

metal oxide

Question 4

metal + water

Answer 4

metal hydroxide + hydrogen

Question 5

metal + dilute acid

Answer 5

salt + hydrogen

Question 6

Metals can be arranged

Answer 6

in order of reactivity by comparing the rates at which they react

Question 7

Metals can be used to

Answer 7

produce soluble salts

Question 8

Techniques for a soluble salt in order

Answer 8

1. filtration
2. evaporation

Question 9

Reduction is

Answer 9

the gain of electrons by a reactant in ANY reaction

Question 10

Oxidation is

Answer 10

the LOSS of electrons in ANY reaction

Question 11

during extraction of metals, metal ions

Answer 11

are reduced forming metal atoms

Question 12

methods for extraction

Answer 12

1. Heat alone
2. Heating with carbon
3. electrolysis

Question 13

what is electrolysis

Answer 13

the decomposition of an ionic compound into its elements using electricty

Question 14

what supply must be used for the products of electrolysis are to be identified

Answer 14

D.C

Question 15

Positive ions

Answer 15

gain electrons at the negative electrode

Question 16

negative ions

Answer 16

lose electrons at the positive electrode

Question 17

what are electrolytes

Answer 17

electrically conducting solutions containing ions

Question 18

a simple cell can be made

Answer 18

by placing two metals in an electrolytes

Question 19

Another type of cell can be made using two half celss

Answer 19

metals in solutions of their own ions

Question 20

An ion bridge

Answer 20

can be used to link the half cels

Question 21

Electricty can be produced in cells where

Answer 21

at least one of the half-cells does not involve metal atoms/ions

Question 22

Why will graphite be used as the electrode for non-metals

Answer 22

1. It won’t reacts
2. It conducts electricity

Question 23

The further apart elements are in the electrochemical series

Answer 23

the greater the voltage produced

Question 24

electrons flow from the element higher to

Answer 24

the element lower

Question 25

This allows the direction of electron flow

Answer 25

to be deduced