WorksheetsMINGGU AKADEMIK KUIZ INTERAKTIF TINGKATAN 5
Total questions: 20
Worksheet time: 20mins
A student carries out an experiment to determine the rate of dissolving salt at different sizes.Which of the following apparatus is essential for the experiment?
Conical flask
Stopwatch
Evaporating dish
Bunsen burner
Atom P
Proton No: 6
Nucleon No: 14
What is the number of neutrons in atom P?
6
7
8
12
What is the emperical formula for this oxide?
JO
J2O
J2O3
J3O2
Which of the following statements explain why the melting point and boiling point of Group 1 element decreases when going down the group in the periodic table?
The number of proton increase.
Size of atom increases.
The relative mass of atom increases.
The number of valence electron increases.
20.0cm3 of 0.4 mol dm-3 sodium hydroxide is titrated with sulphuric acid. What is the volume of 1.0 mol dm-3 sulphuric acid needed to neutralise the sodium hydroxide solution?
4.0cm3
8.0cm3
10.0cm3
12.0cm3
The presence of sulphate ion, SO42- in a solution can be identified by
adding dilute acid and bubbling the gas through limewater
adding nitric acid followed by silver nitrate solution
adding dilute sulphuric acid followed by iron (II)sulphate and concentrated sulphuric acid solution
adding hydrochloric acid followed by barium chloride solution
Which statement BEST explains the advantage of alloys compared to pure metals?
Foreign atoms disrupt the orderly arrangement of pure metal atoms
Atoms of the pure metal fill in the empty spaces between atoms when knocked or pressed
Pure metal atoms slide off less easily than alloys
Pure metal atoms and foreign atoms are different in size and move past each other easier.
What could be the salt shown in the diagram?
Sodium carbonate
Copper (II) sulphate
Iron (II) sulphate
Iron (III) nitrate
The method in the diagram can be used to determine empirical formula for..
magnesium & lead
copper & calcium
copper & aluminium
lead & zinc
Which of the following is caused by hydrogen bonds?
Iceberg floating on the surface of the sea
Metals can conduct electricity while non-metals cannot
Sticky damp hair strand
Salt can dissolve in water but not organic solvent
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
Which example below is a chemical reaction?
ice melting
water boiling
lighting a match
grape juice freezing
Saturated molecules contain...
A carbon to carbon double bond
Only single bonds between carbon atoms
A water molecule
A hydroxyl group
For a compound to be considered an organic compound it must contain
Carbon
Hydrogen
Oxygen
Nitrogen
what is the main source in the production of detergent?
palm oil
animal fat
ammonia
petroleum
why sodium chloride used in preparation of soap?
to speed up the reaction to produce soap
to produce soap with foams easily
to reduce the solubility of soap
to make soap softer
The following equation shows the reaction between calcium carbonate, CaCO3 and hydrochloric acid, HCl:
CaCO3(aq) + 2HCl(aq) → CaCl2(aq) + CO2 (g) + H2O(l)
Which of the following is the suitable method to determine the rate of reaction?
Change in the temperature of the solution with time
Change in the volume of carbon dioxide gas with time
Change in the mass of water with time
Change in the concentration of hydrochloric acid with time
Diagram 4 shows the graph of volume of carbon dioxide gas against time when 5 g of marble chips is added to
50 cm3 of 0.2 mol dm-3 hydrochloric acid.
At what time the rate of reaction the highest?
t1
t2
t3
t4
Which of the following explains the meaning of effective collision?
The collision where its energy is less than the activation energy
The collision that has a low energy
The collision which takes place before a reaction
The collision that causes a reaction
