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Mixture, Compounds And Atoms

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

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