REVISION WORKSHEET
Exercise 1: Complete the following equation
1. Sodium hydroxide + hydrochloric acid → __________ + __________
2. Potassium hydroxide + sulfuric acid → __________ + __________
3. Magnesium + hydrochloric acid → __________ + __________
4. Zinc + sulfuric acid → __________ + __________
5. Copper carbonate + hydrochloric acid → __________ + __________
6. Sodium carbonate + hydrochloric acid → __________ + __________
7. __________ + __________ → barium chloride + hydrogen
8. __________ + __________ → calcium chloride + water
9. __________ + __________ → aluminum chloride + carbon dioxide + water
10. Iron + __________ → iron chloride + __________
Exercise 2:
a. Write the description for each picture to complete the process of titration.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
b. What type of reaction occurs in a titration?
________________________________________________________________________
c. What is the advantage of titration?
________________________________________________________________________
Exercise 3: Complete the table below
Reaction
Gas product
of the reaction
Gas testing method
Nickel + hydrochloric acid →
Barium carbonate + hydrochloric acid
→
Oxygen
Exercise 4:
1. Which of the following is a compound?
A. Oxygen
B. Water
C. Iron
D. Helium
2. What is a mixture?
A. A substance made of one type of atom
B. A substance with a fixed ratio of atoms
C. Two or more substances physically combined
D. A substance that cannot be separated
3. Which of the following is an element?
A. Salt
B. Air
C. Carbon
D. Sugar
4. Which method is best for separating a mixture of sand and water?
A. Distillation
B. Filtration
C. Evaporation
5. Which of the following is a characteristic of a base?
A. Tastes sour
D. Chromatography
B. Turns blue litmus paper red
C. Produces hydrogen gas with metals
D. Feels slippery and turns red litmus blue
6. Which substance is most likely to be acidic?
A. Soap solution
B. Lemon juice
C. Baking soda
D. Ammonia
C. Exactly 7
D. 10–14
7. What is the pH range of acids?
A. 0–7
B. 7–14
8. What happens when an acid reacts with a base?
A. A gas is always released
B. A neutral substance and water are formed
C. Only water is produced
D. Only salt is produced
9. Which of these is a homogeneous mixture?
A. Salad
B. Sand and iron filings
C. Saltwater
D. Oil and water
10. Which of the following best describes a compound?
A. A single kind of atom
B. Atoms physically mixed
C. Two or more atoms chemically bonded
D. A mixture of elements and compounds