acids and bases

Question 1

examples of reactions

Answer 1

digestion of food creates glucose to give engery
mixing an acid with a base creates a mixture of salt and water
iron nails getting rusty and no longer strong enough to use

Question 2

neutralisation

Answer 2

adding together different amounts of an acid or base in order to form a substance with a ph of 7

Question 3

reaction occurs when acids and bases are combined

Answer 3

acid and alkali are neutralised
products left salt and water
called a neutralised reaction

Question 4

titration

Answer 4

investigation to find out the concentration of a substance
burette and pipette

Question 5

acid rain

Answer 5

ph of rain 5.5 or below
damages wildlife, statues, buildings and natural rock

Question 6

base

Answer 6

a chemical opposite to an acid
not all bases are dangerous but some are
from 7-14 on ph scale
bases that dissolve in water are alkaline

Question 7

acid

Answer 7

chemical opposite to a base
from 0-7 on ph scale
some are dangerous but not all

Question 8

indicator

Answer 8

something that shows if a substance is an acid or a base
litmus paper and universal indicators

Question 9

Universal indicator

Answer 9

an indicator that changes colour depending on the ph of the solution
can be in a paper or liquid form
more precise than litmus paper

Question 10

reaction

Answer 10

a process where one or more substances are changed into different substances.
a reaction is a chemical change

Question 11

neutralisation

Answer 11

adding together different amounts of an acid or base in order to form a substance with a ph of 7