Mixture, Compounds And Atoms
Based on science knowledge.
- 1.
Atoms are composed of :
- A.
Electrons, neutrons, protos
- B.
Electrons, neutrons, protons
- C.
None of above
Correct Answer
B. Electrons, neutrons, protons -
- 2.
Which bond exchanges electrons?
- A.
Covalent
- B.
Ionic
Correct Answer
B. Ionic -
- 3.
Which particle orbits the nucleus?
- A.
Neutrons
- B.
Protons
- C.
Electrons
Correct Answer
C. Electrons -
- 4.
Which of the following particle has a positive charge?
- A.
Neutrons
- B.
Protons
- C.
Electrons
Correct Answer
B. Protons -
- 5.
Which of the following particle has no charge?
- A.
Neutrons
- B.
Protons
- C.
Electrons
Correct Answer
A. Neutrons -
- 6.
Most atoms form bonds using only the electrons in their ____ energy level.
- A.
Outermost
- B.
Innermost
Correct Answer
A. Outermost -
- 7.
Which of the following describes what happens when an atom becomes an ion with a 2– charge?
- A.
The atom gains 2 electrons.
- B.
The atom loses 2 electrons.
- C.
The atom has a full outer shell
Correct Answer
A. The atom gains 2 electrons. -
- 8.
The first energy level is closest to the nucleus and can hold up to ____ electrons.
- A.
2
- B.
4
- C.
8
Correct Answer
A. 2 -
- 9.
The second energy level can hold up to ____ electrons.
- A.
2
- B.
4
- C.
8
Correct Answer
C. 8 -
- 10.
Atoms ____ to have a filled outermost energy level
- A.
Split
- B.
Bond
Correct Answer
B. Bond -
- 11.
Atoms bond by ____ electrons.
- A.
Gain
- B.
Lose
- C.
Share
- D.
All of above
Correct Answer
D. All of above -
- 12.
Which of the following is a pure substance made up of one type of atoms?
- A.
An element
- B.
Mixture
- C.
Compound
Correct Answer
A. An element -
- 13.
What is Filtration?
- A.
Separating an insoluble substance from a liquid by passing the mixture through porous paper.
- B.
Heating to separate a soluble substance such as table salt from water
- C.
None of above
Correct Answer
A. Separating an insoluble substance from a liquid by passing the mixture through porous paper. -
- 14.
What is Distillation?
- A.
A combination of 2 processes- evaporation followed by condensation(eg. to make pure water from seawater
- B.
Heating to separate a soluble substance such as table salt from water
- C.
Separating an insoluble substance from a liquid by passing the mixture through porus paper.
Correct Answer
A. A combination of 2 processes- evaporation followed by condensation(eg. to make pure water from seawater -
- 15.
Separating funnel
- A.
Separating an insoluble substance from a liquid by passing the mixture through porous paper.
- B.
Heating to separate a soluble substance such as table salt from water
- C.
A device to separate heavy liquids(eg. water) from lighter liquids(eg. kerosene)
Correct Answer
C. A device to separate heavy liquids(eg. water) from lighter liquids(eg. kerosene) -
- 16.
Compounds can be separated by:
- A.
Chemical means only
- B.
Physical means only
Correct Answer(s)
A. Chemical means only
B. Physical means only -
- 17.
A negative ion is a:
- A.
Anion
- B.
Cation
Correct Answer
A. Anion -
- 18.
An impure substance made up of two or more elements or compounds both mechanically mixed into any proportion and can be further sub-divided by physical means is a
- A.
Mixture
- B.
Compound
Correct Answer
A. Mixture -
- 19.
A pure substance made up of two or more elements chemically combined in a fixed proportion can be sub-divided by chemical means only is a
- A.
Mixture
- B.
Compound
Correct Answer
B. Compound -
- 20.
This type of mixture has the same composition through out.
- A.
Homogeneous
- B.
Heterogeneous
Correct Answer
A. Homogeneous -
- 21.
This type of mixture has a composition that is not uniform.
- A.
Homogeneous
- B.
Heterogeneous
Correct Answer
B. Heterogeneous -
- 22.
This is the liquid which passes through filter paper during filtration.
- A.
Filtrate
- B.
Residue
Correct Answer
A. Filtrate -
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Mar 20, 2022Quiz Edited by
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Jan 15, 2009Quiz Created by
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