Mixture, Compounds And Atoms

27 Questions  I  By Cancerred
Based on science knowledge.

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