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6th Grade Nine Weeks 2 Review 2019
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Which is NOT a sign of a chemical change?
A
one substance dissolved into another substance
B
The substance changed color
C
Bubbles formed when two substances mixed
D
The temperature changed when two substances mixed
2) Is this an element or compound? CO
A
element-cobalt
B
Compound-Carbon and Oxygen
C
There is no way to know
D
neither
3) Is this an element or compound? Na
A
Both
B
Compound-Nitrogen and Arsenic
C
Neither
D
Element-Sodium
4) Which is a sign of a chemical change?
A
something dissolves
B
Something changes from solid to liquid
C
Something absorbed water
D
A color change
5) If an ice cube melts on a hot day-that is a-
A
chemical change
B
chemical reaction
C
physical change
D
really hot day
6) Which is a physical change?
A
wood burning
B
dissolving sugar into water
C
baking a cake
D
silver spoon tarnishing
7) Which is a chemical change?
A
a shirt changing color because bleach was spilled on it
B
ice melting
C
glass breaking
D
sugar dissolving into water
8) Which is the easiest way for your family to supplement your household energy with no pollution?
A
Adding solar panels to help with heating water
B
Start burning coal in your backyard to power your house
C
Build a wind farm in your back yard
D
split uranium atoms in your basement to create energy
9) What is a disadvantage to nuclear energy?
A
flooding
B
radioactive wastes
C
Air pollution
D
Can affect migratory birds
10) What is an advantage of nuclear energy?
A
Creates no wastes
B
Everyone LOVES nuclear energy!
C
It creates air pollution
D
Creates LARGE amounts of energy from small amounts of fuel
11) What is an advantage of hydropower?
A
No air pollution
B
It can create flooding
C
It can be used in every water source in the world
D
It can help rivers flow better
12) What is a disadvantage of hydropower?
A
It does not work when it is nighttime
B
Radioactive wastes
C
Creates air pollution
D
It can cause flooding
13) Which is a characteristic of a compound?
A
made of only one element
B
found on the periodic table
C
made of a mixture of more than one element
D
a pure substance
14) Which would be a characteristic of an element?
A
made of more than one element
B
represented by a chemical formula
C
formed through a chemical reaction
D
a pure substance found on the periodic table
15) If I mix a clear fluid with a white powder and it turned bright yellow-what happened?
A
a physical change occured
B
Nothing-clear and white make yellow all the time
C
a chemical change produced a new substance
D
The white powder really was yellow
16) Which are found on the periodic table?
A
elements
B
apples
C
both
D
compounds
17) Which are essential for life?
A
elements
B
both elements and compounds
C
compounds
D
chair
18) Which is most affected by weather?
A
Hydropower
B
Wind
C
Nuclear
D
Geothermal
19) A source that can be replaced in a relatively short time
A
coal
B
nonrenewable
C
renewable
D
inexhaustible
20) What is true about fossil fuels?
A
they are limited and produce pollution
B
They are a clean energy source
C
They are the best energy source because we can use it forever
D
we will never run out of them
*select an answer for all questions
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