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NC 8.P.1.1 Science Review
Test Description: Review for Unit Test
Instructions: Answer all questions to get your test result.
1) The best way to CALCULATE the number of Neutrons in an element is
A
Look at its atomic mass
B
Atomic mass minus atomic number
C
Look at its atomic number
D
You cannot find this
2) The atomic number of an element tells us
A
What it weighs
B
How many neutrons it has
C
Just where to find it on the periodic table
D
How many protons it has
3) The first three electron shells can fit how many electrons each?
A
8 ,8, 8
B
2 ,4, 8
C
2, 8, 8
D
Depends on the element
4) A compound is made up of
A
Multiple different elements physically combined
B
The same element over and over
C
A mixture of different things
D
Multiple different elements chemically combined
5) C2HO4 would have
A
Impossible to know
B
1 carbon, 2 hydrogen, 4 oxygen
C
2 carbon, 1 hydrogen, 4 oxygen
D
2 carbon, 0 hydrogen, 4 oxygen
6) A homogenous mixture is...
A
A compound
B
An element
C
Different throughout
D
The SAME throughout
7) Which of these is a heterogeneous mixture?
A
A salad
B
Gold
C
Milk
D
Water
8) When gas turns into a liquid, that is called
A
Evaporation
B
Condensation
C
Cooling
D
Rain
9) A gas will usually be...
A
Less dense than a solid
B
It has no mass!
C
More dense than a solid
D
More dense than a liquid
10) You measure something with a volume of 5 ml and a mass of 20 g. What is the density?
A
100 ml/g
B
4 ml/g
C
15 ml/g
D
5 ml/g
*select an answer for all questions
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