chemical reactions

Question 1

metal + oxygen

Answer 1

metal oxide

Question 2

what’s gaining oxygen called

Answer 2

oxidation

Question 3

whats losing oxygen called

Answer 3

reduction

Question 4

Metal + Water makes

Answer 4

Metal hydroxide + Hydrogen

Question 5

What’s metal reactivity dependent on

Answer 5

its ability to ose an electron and form an positive ion

Question 6

Why are metals that are unreactive found by itself

Answer 6

It does not reactive with anything

Question 7

oil rig stands for

Answer 7

oxidation is loss
reduction is gain

Question 8

in aqueous solutions what does acid produce

Answer 8

H+ ions

Question 9

what is an alkali

Answer 9

bases soluble in water

Question 10

what are bases

Answer 10

chemicals that neutralise acid that produce salt and water

Question 11

what do alkalis produce in aqueous solutions

Answer 11

hydroxide

Question 12

how can determine Ph

Answer 12

ph probe or universal indicator

Question 13

what do acids and alkali produce

Answer 13

water
H+ + OH- = h20

Question 14

what do all acids contain

Answer 14

hydrogen

Question 15

acid + metal

Answer 15

salt + hydrogen

Question 16

acid + alkali/base

Answer 16

salt + water

Question 17

acid + metal carbonate

Answer 17

salt + water + carbon dioxide

Question 18

what do strong acids do in aqueous solutions

Answer 18

fully ionise

Question 19

how do we know if an acid fully ionises

Answer 19

one arrow

Question 20

what has a lower ph strong acids or weak acid

Answer 20

strong acid

Question 21

what do weak acids do in aqueous solutions

Answer 21

partially ionise

Question 22

how do we know if a weak acid partially ionised

Answer 22

2 arrows

Question 23

name 3 strong acids

Answer 23

hydrochloric
sulfuric
nitric

Question 24

name 3 weak acids

Answer 24

carbonate
ethanoic
citric

Question 25

if we go one unit down on the ph scale what happens to hydrogen concentration

Answer 25

10 x stronger

Question 26

how do we know if something is a salt

Answer 26

salts have an positive on from the alkali and a negative ion from the acid

Question 27

what are the three reactions we need to know

Answer 27

acid + alkali acid + metal acid + metal carbonate

Question 28

why cant solid ionic compunds conduct electricity

Answer 28

ions aren't free to move due to strong electrostatic forces

Question 29

when is hydrogen produced at the cathode

Answer 29

when the metal is more reactive than hydrogen

Question 30

what are the electrodes called as they do not react

Answer 30

inert