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- Multiple ChoicePlease save your changes before editing any questions.
Chemistry is defined as the study of
living organisms
motion and forces
physical phenomena
matter and its changes
- Multiple ChoicePlease save your changes before editing any questions.
Chemistry is essential in the study of the following fields except
Geology
Accountancy
Pharmacology
Food Technology
- Multiple ChoicePlease save your changes before editing any questions.
Which activities require chemistry knowledge ?
P : Dissolving
sugar in a drink
Q : Preventing the gate from rusting
R : Removing paint stains
P and Q only
P and R only
Q and R only
P, Q and R
- Multiple ChoicePlease save your changes before editing any questions.
The statements below are the steps involved in an investigation.
P Making hypothesis
Q Identifying and controlling variables
R Identifying problem
S Collecting data
T Making conclusion
U Interpreting data
Which of the following is the correct sequence?😄
P, Q, R, S, T, U
Q, P, R, T, S, U
R, P, Q, S, U, T
R, Q, P, U, S, T
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is done if a hypothesis is rejected in an experiment?
A theory is made
Variables are changed
A new hypothesis is made
The scientific concept is changed
- Multiple ChoicePlease save your changes before editing any questions.
The higher the temperature of the water,
the higher the mass of sugar dissolved in it.
Which is the responding variable for the above experiment?
Temperature of the water
Mass of sugar dissolved
Volume of the water
Size of the sugar granules
- Multiple ChoicePlease save your changes before editing any questions.
Which chemical cannot be found in the sea?
Chlorine
Potassium
Helium
Magnesium
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not true?
COPPER
Making of
electrical wires
CALCIUM OXIDE
Making of cement and mortar
SAND
Making of glass
ZINC
Making of soft drink can
- Multiple ChoicePlease save your changes before editing any questions.
Polyethene terephthalate is a chemical manufactured in the petrochemical plant in Gebeng, Pahang.
This chemical is used to produce..
plastic bottles
medicine
clothing
fertilizer
- Multiple ChoicePlease save your changes before editing any questions.
Which one of the following substances consists of atom?
Water, H2O
Zinc metal, Zn
Carbon dioxide gas, CO2
Solid sodium chloride, NaCl
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following substances consist of molecules as its particle ?
Neon, Ne
Ammonia, NH3
Potassium nitrate, KNO3
Sodium hydroxide, NaOH
- Multiple ChoicePlease save your changes before editing any questions.
Diagram above shows an experiment to investigate diffusion process in liquid.
What will be the observation after a few hours?
Two layers are formed
A purple solution is formed
A colourless solution is formed
Potassium manganate(VII) crystal remain unchanged
- Multiple ChoicePlease save your changes before editing any questions.
The boiling point of carbon tetrachloride, CCl4 is 76.0 OC.
Which of the following statement is true about the molecules of carbon tetrachloride at 80.0 OC?
The carbon tetrachloride molecules becomes lighter
The distance between the carbon tetrachloride molecules decrease
The kinetic energy of the carbon tetrachloride molecules becomes lower
The forces of attraction between the carbon tetrachloride molecules becomes weaker
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following occurs when liquid naphthalene are cooled at room temperature ?
The particles move faster
The contents of energy increases
The arrangement of particles is not in order
The attraction forces between particles increase
- Multiple ChoicePlease save your changes before editing any questions.
The mass of one mole of the substance in grams
is the meaning for ...
Mole
Molar mass
Relative atomic mass
Number of particle