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Mixture, Compounds And Atoms

27 Questions  I  By Cancerred
Based on science knowledge.

  
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Question Excerpt

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