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WorksheetsScience Form 3 Chapter 4 (Reactivity of Metals)
Total questions: 15
Worksheet time: 8mins
Mineral are solid _____________ or _________________ that are naturally found with certain crystalline structures and chemical composition on the Earth's crust.
(a)
Calcium carbonate is a combination of:
Calcium, carbon and nitrogen
Calcium, hydrogen and nitrogen
Calcium, oxygen and carbon
Calcium, carbon and hydrogen
Reactivity of metal towards oxygen increases when going down the reactivity series of metal diagram.
True
False
The most reactive metal in the reactivity series of metals is ______________.
Calcium
Potassium
Magnesium
Aluminium
In a vigorous reaction between a more reactive metal such as magnesium and oxygen, a bright flame is observed
True
False
In a less vigorous reaction between a less reactive metal such as iron and oxygen, only a glow or slow change in colour is observed
True
False
Choose the correct sequence.
.............. , ............ , .........
----------------------------------->
Reactivity towards oxygen increases
Silver , Copper , Magnesium
Iron , Lead , Mercury
Magnesium , Aluminium , Calcium
Iron , Carbon , Lead
Magnesium + oxygen ----------> X
What is X ?
Magnesium oxide
Magnesium dioxide
Magnesium trioxide
Magnesium(IV) oxide
Based on the following diagram, what is the function of potassium manganate (VII) crystals in this experiment?
To supply oxygen
To avoid the metals to mix with each other
To release heat
To give out water vapour
What are the two non-metal elements that are included in the reactivity series of metals? (Hint: Choose more than one answer).
Calcium
Carbon
Sodium
Hydrogen
Write the word equation between metal oxide and carbon.
Metal oxide + Carbon Metal + Carbon dioxide
Metal oxide + Carbon Metal oxide
Metal oxide + Carbon Metal + Water + Carbon dioxide
Metal oxide + Carbon Metal oxide + Carbon dioxide
The diagram shows a setup apparatus for an experiment. What is the aim of the experiment?
To determine the position of carbon in the reactivity series of metals
To determine the position of hydrogen in the reactivity series of metals
To observe the reactivity of metals with carbon dioxide
To observe the reactivity of metals with water
If carbon can remove oxygen from a metal oxide, it means carbon is ___________ reactive than the metal.
more
less
Based on the diagram, what is the function of anhydrous calcium chloride in the experiment?
To absorb water vapour so that dry hydrogen will be produced
To supply hydrogen gas
To separate the metals
To release heat for combustion
Write the word equation between metal oxide and hydrogen.
Metal oxide + Hydrogen Metal + Water
Metal oxide + Hydrogen Metal hydroxide
Metal oxide + Hydrogen Metal + Water + Carbon dioxide
Metal oxide + Hydrogen Metal oxide + Water
