Chemistry North Carolina Final Exam
Quiz
•
Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
+7
Standards-aligned
Charles Martinez
Used 1+ times
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23 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the chemical formula for magnesium bromate?
MgBr
MgBr2
MgBrO3
Mg(BrO3)2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How are compounds with metallic bonds similar to ionic compounds?
Both tend to have double and triple bonds.
Both tend to have low boiling points.
Both tend to have poor conductivity.
Both tend to have high melting points.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of these elements has the greatest atomic radius?
H
Cl
N
Cs
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How does the amount of heat energy change as a 250-g sample of water is heated from 5.0°C to 30.0°C?
The amount of heat energy increases, causing the water to sublime.
The amount of heat energy increases, causing the water to evaporate.
As the temperature increases, the amount of heat energy decreases.
As the temperature increases, the amount of heat energy increases.
Tags
NGSS.HS-PS3-2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
This graph represents data collected when a sample of a gas is uniformly cooled from 155°C. Why does the temperature of the sample remain constant between point X and
point Y? (phase changes/cooling/heating curves)
because the sample is transitioning from a gaseous state to a solid state
because the sample is transitioning from a gaseous state to a liquid state
because the sample is transitioning from a solid state to a gaseous state
because the sample is transitioning from a liquid state to a solid state
Tags
NGSS.HS-PS3-4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The phases of a substance under various pressure and temperature combinations are shown on this phase diagram. What occurs if the pressure of the substance at point F remains constant, and the temperature increases to point G? (phase changes and phase diagrams)
It will transition from a solid state to a liquid state.
It will transition from a liquid state to a solid state.
It will transition from a solid state to a gaseous state.
It will transition from a gaseous state to a solid state.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The potential energy diagram of a chemical reaction is shown . Which best describes the energy in the chemical reaction? (energy diagrams/Activation Energy)
Heat energy was released.
Energy was lowered by a catalyst.
8 J of energy were required to start the reaction.
10 J of energy were required to start the reaction.
Tags
NGSS.HS-PS1-4
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