
Topic 9 Review for the Topic 8 & 9 Test
Authored by Michael Stock
Science
6th - 8th Grade
NGSS covered
Used 12+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is formed when a sodium atom (Na) and a chlorine atom (Cl) react chemically to form salt (NaCl)?
an element
a molecule
an electron
a neutron
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-1
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following is possible evidence that a chemical reaction has occurred? Chose ALL that apply.
bubbles are released
color change
change in smell/taste
a precipitate forms
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A chemical change happens when ____________.
glass breaks
bread bakes in the oven
ice cream melts
electricity flows through a wire
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a chemical reaction, what happens to the total mass of the substances involved?
the mass increases
the mass deacreases
the mass stays the same
the mass is doubled
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following formula for hydrogen peroxide: H2O2.
What is the coefficient?
0
1
2
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the following formula for hydrogen peroxide: H2O2.
How does the number of hydrogen atoms compare to the number of oxygen atoms?
they are the same
there is more hydrogen
there is more oxygen
there is not enough information provided
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What coefficient for O2 demonstrates the law of conservation of mass?
CH4 + __O2 → CO2 + 2H2O
1
2
3
4
Tags
NGSS.MS-PS1-5
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