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WorksheetsTerm 4 - Inorganic and Organic Chemistry
Total questions: 14
Worksheet time: 12mins
To identify a cation metal in a nitrate salt. A student conduct a flame test. Predict the colour of the flame when student conduct a flame test with sodium nitrate.
yellow
red
blue
purple
Which element could be a transition metal ?
Metal A = form colourless nitrate salt, low density, moderate melting point
Metal B = form colourless nitrate salt, high density, high melting point
Metal C = form coloured nitrate salt, high density, high melting point
Metal D = form coloured nitrate salt, high density, low melting point
The reactions of metals A, B, C, and D are shown.
A + water = slow reaction;
B + water = no reaction;
C + water = vigorous reaction;
D + water = very slow reaction
What is the order of reactivity of the metals from least reactive to the most reactive ?
A, B, C, D
B, D, A, C
C, A, D, B
B, A, D, C
What is the method to prevent rusting of iron fences ?
Painting
Coating with zinc
Covered with plastic
Washing with weak acid
Which one shows the correct elements present in a certain alloy ?
Steel = mixture of copper and carbon
Brass = mixture of copper and iron
Bronze = mixture of copper and tin
Type of isomerism shown by 3 – methyl pentane and 2 – methyl pentane ?
Chain
Position
Geometry
Type of isomerism shown by hexane and 2,2 – dimethyl butane ?
Chain
Position
Geometry
The chemical formula of an alkane ?
C8H16, C9H18
C7H16, C10H22
C9H16, C11H24
Which one is the name of the isomers of the structure shown below ?
CH3 – CH2 – CH2 – CH2 – CH3
Pentane
2, 2 – dimethyl propane
3 – methyl pentane
3 – methyl butane
Petroleum can be separated into fractions. Which fractions has the lowest boiling point ?
Bitumen
Kerosene
Diesel
Refinery gas
Which one is the appropriate name for a hydrocarbon compound ?
3 – propyl pentane
4 – methyl butane
2, 3 – dimethyl pentane
Which one shows the properties of alkanes ?
Decolourise bromine & has C – C and C – H single bond only
Less reactive compared to the other hydrocarbons and doesn’t decolourise bromine
Contains C – C single bond and C = C double bond
How many isomers of C5H12 ?
1
2
3
4
How many isomers of C4H10 ?
1
2
3
4
