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Mixture, Compounds And Atoms

27 Questions  I  By Cancerred
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Mixture, Compounds And Atoms
Based on science knowledge.

  
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1.  Which of the following describes what happens when an atom becomes an ion with a 2– charge?
A.
B.
C.
2.  Which bond exchanges electrons?
A.
B.
3.  This type of mixture has the same composition through out.
A.
B.
4.  Which of the following particle has no charge?
A.
B.
C.
5.  What is paper chromotography?
A.
B.
6.  Separating funnel 
A.
B.
C.
7.  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.
B.
8.  A positive ion is a:
9.  What is Evaporation?
A.
B.
C.
10.  Which of the following is a pure substance made up of one type of atoms?
A.
B.
C.
11.  Mixtures can be separated by:
A.
B.
12.  This is the liquid which passes through filter paper during filtration.
A.
B.
13.  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.
B.
14.  This type of mixture has a composition that is not uniform.
A.
B.
15.  Which of the following particle has a positive charge?
A.
B.
C.
16.  The first energy level is closest to the nucleus and can hold up to ____ electrons.
A.
B.
C.
17.  Atoms bond by ____ electrons.
A.
B.
C.
D.
18.  What is Distillation?
A.
B.
C.
19.  This is the solid remaining in filter paper after filtration.
A.
B.
20.  Compounds can be separated by:
A.
B.
21.  A negative ion is a:
A.
B.
22.  Atoms are composed of :
A.
B.
C.
23.  Atoms ____ to have a filled outermost energy level
A.
B.
24.  Most atoms form bonds using only the electrons in their ____ energy level.
A.
B.
25.  What is Filtration?
A.
B.
C.
26.  The second energy level can hold up to ____ electrons.
A.
B.
C.
27.  Which particle orbits the nucleus?
A.
B.
C.
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