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Physical Science Q1 2012 21 - 30
Test Description: PS, Q1, 2012, 21 - 30
Instructions: Answer all questions to get your test result.
1) WHich of these is NOT an example of a physical change?
A
liquid evaporating
B
a piece of wood breaking
C
a match burning
D
ice melting
2) Pretend that an object has a density of 5 grams per centimeter cubed. If you were to cut the object in half, the density of each half is
A
more than 5 centimeters cubed
B
less than 5 grams per centimeter cubed
C
the exact same
D
for some odd reason, 0.
3) Which of the following is NOT a chemical property?
A
density
B
reactivity
C
acidity
D
combustibility
4) What is the formula to find density?
A
mass = weight x volume
B
density = weight divided by volume
C
density = volume divided mass
D
density = mass divided by volume
5) John Dalton's model of an atom can be described as:
A
electrons and protons float freely within the boundaries of the atom
B
the atom looks like a cloud, you can't really see anything else
C
electrons are inside the atom, but outside of the nucleus
D
electrons follow a set path around the nucleus
6) Which model of the atom does the BEST job of illustrating the three dimensional structure of the atom?
A
Electron cloud model
B
Bohr's model
C
Thompson's model
D
Rutherford's model
7) Which subatomic particles have a positive charge and are located in the nucleus?
A
protons
B
elements
C
electrons
D
neutrons
8) The nucleus of an atom is though to contain:
A
electrons
B
molecules
C
legos
D
protons and neutrons
9) How many atoms are present in the molecule for salt, NaCl?
A
3
B
2
C
5
D
4
10) Which of the following is NOT a group within the periodic table of elements?
A
halogens
B
noble gasses
C
alkali metals
D
water
*select an answer for all questions
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