Module 1.3 - Acids, Bases and their reactions

Question 1

what is an acid

Answer 1

substance that releases hydrogen ions in aqueous solution

Question 2

what are the 6 properties of acids

Answer 2

1. corrosive
2. sour taste
3. turn blue litmus paper red
4. react with some metals
5. conduct electricty
6. neutralised by bases

Question 3

what are acids made of

Answer 3

acids are molecular compounds made up of different types of elements

Question 4

What determines the strength of an acid

Answer 4

if tehre is lots of hydrogen ions it is strong if their is little it is weak

Question 5

what is an base

Answer 5

substance that releases hydroxide ions

Question 6

what are the 6 properties of bases

Answer 6

1. caustic
2. soapy/slimy feel
3. turn red litmus paper blue
4. bitter taste
5. conduct electricty
6. neutralised by acids producing salt and water

Question 7

What determines the strength of a base

Answer 7

strong bases have lots of hydroxide ions and weak have little

Question 8

what are alkalis

Answer 8

bases that are able to be dissolved in water

Question 9

what does the pH scale measure

Answer 9

the hydrogen ion concentration in solution is measured

Question 10

what range of pH is measured

Answer 10

1 - 14

Question 11

How is an indicator used

Answer 11

an indicator is ued by comparing the colour of the indicator to the pH scale

Question 12

What is neutrlization

Answer 12

acids react with bases to form a salt and water solution