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- 1. Multiple Choice
Covalent compounds can be formed between
a metal and a non-metal
a positive ion and a negative ion
two identical non-metal atoms, excluding the noble gases
two identical non-metal atoms, including the noble gases
- 2. Multiple Choice
Which of the following processes suggests that matter is made up of minute particles?
Diffiusion
Capillarity
Evaporation
Distillation
- 3. Multiple Choice
Which of the following statements BEST describes the difference between an atom and an ion?
An atom is electrically neutral but an ion is positively charged.
An atom is electrically neutral but
an ion is negatively charged.
An atom contains equal numbers of protons andelectrons whereas an
ion contains more electrons than protons.
An atom contains equal numbers of protons and electrons whereas an
ion contains unequal numbers of protons and elecffons.
- 4. Multiple Choice
Which ofthe followingfeatures are true about the arrangement of electrons, protons and neutrons in an atom?
Protons and neutrons are found in the nucleus.
Electrons can be found anywhere outside the nucleus.
The number of protons is the same as the number of neutrons.
- 5. Multiple Choice
The mass number ofan element is the number
of
neutrons in an atom of the element
protons and electrons in an atom of
the element
neutrons and protons in an atom of
the element
protons, neutrons and electrons in
an atom of the element
- 6. Multiple Choice
From which of the following substances can a solid be obtained by the process of sedimentation?
Gels
Foams
Emulsions
Suspensions
- 7. Multiple Choice
Which set of elements has atoms with two electrons in their outer shells?
Group 1
Group 2
The halogens
Period 3
- 8. Multiple Choice
Which set of elements forms molecules which contain two atoms?
Group 1
Group 2
The halogens
Period 3
- 9. Multiple Choice
Which ofthe following energy changes occurs during the breaking of a chemical bond?
Energy is released.
Energy is required.
There is no energy change.
The process is exothermic.
- 10. Multiple Choice
Which ofthe following oxides reactwith both acids and bases?
MgO
CuO
Al2O3 (The numbers are sub-script)
CaO
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