1) Describe the tests for Oxygen (2).
Ans:
Relight a glowing splint
C1 TOPIC 3
M. Rahman
2) Describe the tests for Hydrogen (2).
Ans:
Squeaky pop with a lighted splint
C1 TOPIC 3
M. Rahman
3) Describe the tests for chlorine
(2).
Ans:
A damp blue litmus paper turns white (temporarily
turning red)
C1 TOPIC 3
M. Rahman
4) Name three laboratory acids (3).
Ans:
Hydrochloric acid (HCl)
Sulphuric acid (H2SO4)
Nitric Acid (HNO3)
C1 TOPIC 3
M. Rahman
5) Name two products that a contain everyday acids
(2).
Ans:
Oranges (Citrus fruits)
Vinegar.
C1 TOPIC 3
M. Rahman
6) Name three laboratory alkali
Ans:
Sodium Hydroxide (NaOH)
Calcium Carbonate (CaCO3)
Calcium Hydroxide (Ca(OH)2
Metal Oxides, hydroxides or carbonates
C1 TOPIC 3
M. Rahman
7. Name a product containing house hold alkali.
Ans:
Soap or Shampoo
C1 TOPIC 3
M. Rahman
8. What is the process called when an acid reacts
with alkali?
Ans:
Neutralisation
C1 TOPIC 3
M. Rahman
9. What is the product of the reaction of an acid and
alkali.
Ans:
Salt + water
C1 TOPIC 3
M. Rahman
10) Complete the word equation
Acid + Alkali ----____+____
Ans:
Acid + Alkali ----Salt + Water
C1 TOPIC 3
M. Rahman
11) What are the pH of:
a)
Acid
b)
Alkali
c)
When a substance is neutral;
.
Ans:
a)
Below 7
b)
Above 7
c) 7
C1 TOPIC 3
M. Rahman
12) Name some uses of salts (2).
Ans:
• Ammonium nitrate (salt)
• Fire works (colouring agents-calcium chloride)
C1 TOPIC 3
M. Rahman
Complete the equation;
13) Metal oxide + Hydrochloric acid ----
Ans
Metal oxide + Hydrochloric acid
C1 TOPIC 3
----
Metal Chloride + Water
M. Rahman
Complete the equation
14) Metal oxide + Sulphuric acid ----
Ans:
Metal oxide + Sulphuric acid
C1 TOPIC 3
----
Metal sulphate + Water
M. Rahman
Complete the equation
15) Metal hydroxide + Hydrochloric acid ----
Ans:
Metal oxide + Hydrochloric acid
C1 TOPIC 3
----
Metal Chloride + Water
M. Rahman
Complete the equation
16) Metal hydroxide + Sulphuric acid ----
Ans:
Metal hydroxide + Sulphuric acid
C1 TOPIC 3
----
Metal sulphate + Water
M. Rahman
Complete the equation
17. Metal hydroxide + Nitric acid ----
Ans:
Metal hydroxide + Nitric acid
C1 TOPIC 3
----
Metal nitrate + Water
M. Rahman
Complete the equation
18. Metal carbonate + Hydrochloric acid ----
Ans:
Metal carbonate + Hydrochloric acid
C1 TOPIC 3
--
Metal chloride + water + carbon dioxide
M. Rahman
Complete the equation
19. Metal carbonate + Nitric acid ----
Ans:
Metal carbonate + nitric acid
C1 TOPIC 3
--
Metal nitrate + water + carbon dioxide
M. Rahman
20) What would neutralise sulphuric acid and why?
a) Sodium Oxide
b) Sodium Chloride
C) Sodium Sulphate
a) Sodium Oxide because this is the only one that is
an alkali and the rest are salts. Acids react with
alkali.
C1 TOPIC 3
M. Rahman
21) Which acid will give you metal sulphate
a) Hydrochloric acid
b) Nitric acid
c) Sulphuric acid
c) Sulphuric acid
C1 TOPIC 3
M. Rahman
22) Which acid will give you metal Nitrate
a) Hydrochloric acid
b) Nitric acid
C) Sulphuric acid
Ans:
b) Nitric acid
C1 TOPIC 3
M. Rahman
23) Which acid will give you carbon dioxide when reacted
with an acid
a) Sodium hydroxide
b) Sodium hydroxide
C) Sodium carbonate
Ans:
C) Sodium carbonate
C1 TOPIC 3
M. Rahman
24) Name the acid found in our stomach
Ans:
Hydrochloric acid (HCl)
C1 TOPIC 3
M. Rahman
25) What is the job of the acid found in the stomach
(2)
Ans:
1) Help with digestion
2) To kill bacteria
C1 TOPIC 3
M. Rahman
26) How is indigestion caused?
Ans:
Excess acid in the stomach.
C1 TOPIC 3
M. Rahman
27) What do indigestion tablets contain?
Ans:
Alkali/Base
.
C1 TOPIC 3
M. Rahman
28) How do indigestion tablets work? (2)
Ans:
• They contain alkali and
• work by neutralising the excess acid in the stomach.
.
C1 TOPIC 3
M. Rahman
29) Why are power station chimneys
lined with alkali? (4)
Ans
• Sulphur dioxide released (1);
• which is acidic (1);
• reacts with alkali to neutralises it (1);
• preventing it from going to the atmosphere (1)
• reacting with water (1)
• and forming acid rain (1)
C1 TOPIC 3
M. Rahman
30) Describe how acid rain is formed.
Ans
• Fossil burnt (1),
• Release sulphur
• Which reacts with oxygen to form sulphur dioxide (1),
• Reacts with rain water to produce acid rain (1)
C1 TOPIC 3
M. Rahman
31) Describe how the effects of acid
rain are reduced on farm land?
• soil is acidic (1)
• add alkali (1),
• to neutralise the acid (1)
C1 TOPIC 3
M. Rahman
32) Describe what electrolysis is.
Electrolysis is the breaking down of a compound using
electricity to produce two other elements.
C1 TOPIC 3
M. Rahman
33) The electricity required for electrolysis comes
from….
Ans:
Direct current (DC current)
C1 TOPIC 3
M. Rahman
34) What is the liquid in electrolysis called that
conducts the electricity?
Ans
Electrolyte
C1 TOPIC 3
M. Rahman
35) What is the role of the electrode?
Ans
It provides the electricity to the electrolyte
C1 TOPIC 3
M. Rahman
36) In the electrolysis of hydrogen chloride, the
products are…..
Ans
Hydrogen gas and
Chlorine gas
C1 TOPIC 3
M. Rahman
37) Name three uses of Chlorine (3).
Ans
• Used to treat water supplies (kill bacteria)
• Make bleach
• Make polymers
C1 TOPIC 3
M. Rahman
38) What does the electrolysis of water give? (2)
Ans:
a) Hydrogen gas
b) Oxygen gas
C1 TOPIC 3
M. Rahman
39) What type of rock are;
a) Chalk
b) marble
Ans
1) Sedimentary
2) Metamorphic
C1 TOPIC 3
M. Rahman
40) Write a balanced equation for what happens
when limewater reacts with carbon dioxide.(3)
Ans
Ca(OH)2 + CO2 ---- CaCO3 + H2O
C1 TOPIC 3
M. Rahman
41) When calcium carbonate is heated, a reaction
takes place. Explain how you would show a reaction
has taken place (3).
Ans
• Carbon dioxide is produced when heated
• bubble through lime water
• Lime water goes milky
C1 TOPIC 3
M. Rahman
42) Describe what you would observe when water is
added, one drop at a time, to cold calcium oxide
Ans
• fizzing / hissing (1)
• steam (1)
• swells (1)
• solid crumbles (to a powder) (1)
• becomes hot (1)
C1 TOPIC 3
M. Rahman
43) Some indigestion tablets contain magnesium
carbonate.
Write the word equation for the reaction of
magnesium carbonate with hydrochloric acid.
Ans
Magnesium carbonate + Hydrochloric acid -- Magnesium Chloride + Hydrogen+ water
C1 TOPIC 3
M. Rahman
44) What do each of these hazard symbols means?
a)
b)
c)
d)
Highly flammable
Toxic
Harmful (irritant)
Corrosive
C1 TOPIC 3
M. Rahman