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