acids and bases

Question 1

on the pH scale what is the number 7?

Answer 1

neutral

Question 2

on the pH scale what is number 1?

Answer 2

a very strong acid

Question 3

the number 14 on the pH scale is ?

Answer 3

a very strong alkali

Question 4

what ions do acids contain?

Answer 4

H+ ions
(hydrogen)

Question 5

what ions do alkalines contain?

Answer 5

OH- ions
(hydroxide)

Question 6

what do H+ and OH- react to make ?

Answer 6

water
is a neutralisation reaction

Question 7

what do metal and acids produce

Answer 7

metal + acid = salt + hydrogen

Question 8

in a reaction between metal and acids what do the H+ ions do?

Answer 8

bubble and fizz as H2 (hydrogen) is less reactive than metal

Question 9

what kind of reaction is the rraction between metals and acids ?

Answer 9

exothermic, large temprature rise

Question 10

what do acids + alkalis make ?

Answer 10

Acid + alkali = salt + water
( no bubbling)

Question 11

what kind of reaction is the reaction between alkalis and acids ?

Answer 11

exothermic

Question 12

what does the reaction of acid + carbonate create?

Answer 12

acid + carbonate = salt + water + CO2

Question 13

what does the type of salt produced depend on?

Answer 13

the type of acid used

Question 14

if hydrochloric acid is used what kind of salt will it make ?

Answer 14

chlorides Cl-

Question 15

if sulfuric acid is used what kind of salt will it make ?

Answer 15

sulfates SO4 2-

Question 16

if nitric acid is used what kidn of salt will it create?

Answer 16

nitrates NO3 -