Mixture, Compounds And Atoms

27 Questions  I  By Cancerred
Based on science knowledge.

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