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WorksheetsPreparation EASE 3 Grade 9
Total questions: 25
Worksheet time: 13mins
What is the property of alkali metals?
1. soft and can be cut with a knife
2. reactive metals
3. form positive ions
1, 2 and 3
1 and 2
2 and 3
1 only
Aluminum is used to make containers for storing food. Which property makes it suitable for this use?
conducts heat
low density
resists corrosion
shiny surface
Which of the following is the most reactive metal?
lithium
potassium
rubidium
sodium
Which statement about aluminum is correct?
1. resistant to corrosion
2. good electrical conductivity
3. strong and has a high density
1, 2 and 3
1 and 2
2 and 3
1 only
Which uses of aluminum metal are correct?
1. aircraft body
2. car bodies
3. food packaging
1, 2 and 3
1 and 2
2 and 3
1 only
The following table shows the melting points and boiling points of substances. Which substances are liquid at 900 0C?
all substances
iodine and sodium chloride
methane and sodium carbonate
sodium chloride and sodium carbonate
Which statement about acids and bases is correct?
A base is a donor of hydrogen ions.
An acid is an acceptor of protons.
A strong acid is fully ionized in an aqueous solution.
A weak acid cannot be used to neutralize a strong base.
Which statements about weak acids, such as ethanoic acid, are correct?
1. It reacts with a carbonate.
2. It does not neutralize an aqueous sodium hydroxide solution.
3 It turns red litmus into the blue.
4 It is only partially ionized in an aqueous solution.
1 and 2
1 and 4
2 and 3
3 and 4
Zinc sulfate is made by reacting an excess of zinc oxide with dilute sulfuric acid. The excess zinc oxide is then removed from the solution. Which process is used to obtain solid zinc sulfate from the solution?
crystallization
dissolving
filtration
fractional distillation
Which two compounds give a white precipitate when their aqueous solutions are mixed?
silver nitrate and sodium chloride
silver nitrate and sodium iodide
sodium hydroxide and copper (II) sulfate
sodium hydroxide and iron (III) chloride
A chemical reaction is carried out on substance X. A gas is produced that turns red litmus paper into the blue. What is the reaction?
the reaction of an acid with a metal carbonate
the reaction of an acid with an ammonium salt
the reaction of alkali with a metal carbonate
the reaction of alkali with an ammonium salt
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