Mixture, Compounds And Atoms

27 Questions  I  By Cancerred
Based on science knowledge.

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