AP Insta-Review

Quiz
•
Science
•
8th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
One molecule of carbon dioxide (CO2) combines with one molecule of water (H2O) to make one molecule of carbonic acid. According to the Law of Conservation of Mass, how many atoms of carbon should be in the carbonic acid?
1
2
3
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many copper atoms and how many chlorine atoms are in a molecule of CuCl2?
one copper atom, one chlorine atom
one copper atom, two chlorine atoms
two copper atoms , one chlorine atom
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A chemistry student combines 32 grams of one chemical and an unknown amount of another chemical in a closed system. A chemical reaction occurs and the mass of the products is 114 grams. How much of the unknown chemical was used in the reaction?
32 grams
82 grams
114 grams
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the importance of a closed container in a chemical reaction?
to observe the mass before and after the reaction occurs
to keep any materials from interfering with the reaction
to observe the loss of mass after the reaction occurs
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which best represents a balanced equation?
Mg(s) + 2O2(g) 2MgO(s)
Mg(s) + O2(g) 2MgO(s)
2Mg(s) + O2(g) 2MgO(s)
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which best supports the Law of Conservation of Mass?
Atoms can be rearranged to keep the same mass.
Atoms can be destroyed to make a new substance.
Atoms can be rearranged to change their mass.
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which must be true if the number of atoms stays the same regardless of how they are arranged?
Their total mass must change.
Their total mass stays the same.
An open system must have been used.
Tags
NGSS.MS-PS1-5
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