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Chemistry is defined as the study of
motion and forces
matter and its changes
Chemistry is essential in the study of the following fields except
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
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
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
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
Which chemical cannot be found in the sea?
Which of the following is not true?
Making of cement and mortar
Making of glass
Making of soft drink can
Polyethene terephthalate is a chemical manufactured in the petrochemical plant in Gebeng, Pahang.
This chemical is used to produce..
Which one of the following substances consists of atom?
Zinc metal, Zn
Carbon dioxide gas, CO2
Solid sodium chloride, NaCl
Which of the following substances consist of molecules as its particle ?
Potassium nitrate, KNO3
Sodium hydroxide, NaOH
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
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
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
The mass of one mole of the substance in grams
is the meaning for ...
Relative atomic mass
Number of particle