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PT #3
Test Description: Last Test Review
Instructions: Answer all questions to get your test result.
1) charge of a proton
A
negative
B
positive
C
neutral (no charge)
2) charge of an electron
A
neutral (no charge)
B
positive
C
negative
3) location of an electron
A
in the nucleus
B
outside the nucleus
4) Most of our atmosphere is _______________ gas
A
oxygen
B
carbon dioxide
C
helium
D
nitrogen
5) If an atom is neutral, what 2 particles have equal numbers?
A
proton and electron
B
neutron and proton
C
neutron and electron
D
none of these
6) atomic number always equals the number of these
A
photons
B
neutrinos
C
protons
D
neutrons
7) symbol for iron
A
Ir
B
I
C
In
D
Fe
8) change that produces new substances
A
chemical
B
physical
9) example of a physical change
A
paper burning
B
iron rusting
C
ice melting
10) how the periodic table is arranged
A
alphabetically
B
by mass number
C
by date of discovery of the elements
D
by atomic number
11) charge and location of a neutron
A
negative; outside the nucleus
B
neutral; outside the nucleus
C
neutral; in the nucleus
D
negative; in the nucleus
*select an answer for all questions
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