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Science-Ch. 6, Part 2
Test Description: Atomic Structure and Chemical Bonds
Instructions: Answer all questions to get your test result.
1) Acids and bases can be all of the following except _______________.
A
harmful
B
edible
C
useful
D
living
2) Which of the following notations represents a molecule?
A
NaCl
B
He
C
Li
D
H2O
3) In an atom, electrons __________________.
A
are always in the same place in an atom
B
are located in the nucleus
C
travel outside the nucleus
D
are paired with neutrons
4) Aspertame is an artificial sweetener, its formula is C13H16N2O5. Which element in the formula has the largest number of atoms?
A
oxygen
B
carbon
C
hydrogen
D
nitrogen
5) The following are examples of physical properties EXCEPT ________________.
A
shape
B
ability to react with oxygen
C
density
D
color
6) The particles that make up an atom are ________________.
A
protons, neutrons, and nuclei
B
elements, protons, and electrons
C
protons, neutrons, and electrons
D
electrons, protons, and nuclei
7) Density is an example of a __________________.
A
physical property
B
chemical property
C
chemical change
D
physical change
8) All of the following are examples of physical changes except ________________.
A
evaporating
B
solidifying
C
melting
D
burning
9) How many dots are shown in the electron dot diagram for calcium, element number 20?
A
two
B
one
C
eight
D
twenty
10) Dot diagrams are used to represent _________________.
A
atomic mass
B
outer electrons
C
the structure of the nucleus
D
protons
*select an answer for all questions
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