Quarterly Assessment 1-regents Chemistry
14 Questions
| Total Attempts: 100
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NYS Regent Curriculum, mp 1.
Questions and Answers
- 1.WHich of the following can not be decomposed into simpler substances?
- A.
Elements
- B.
Compounds
- C.
Solutions
- D.
Mixtures
- 2.
- A.
A single element
- B.
A mixture of elements
- C.
A single compound
- D.
A mixture of compounds
- 3.Which particle diagram below best represents a single element?
- A.
A
- B.
B
- C.
C
- D.
D
- 4.A compound differs from a mixture in that a compound always has a
- A.
Minimum of three components
- B.
Heterogeneous composition
- C.
Homogeneous composition
- D.
Maximum of two components
- 5.What process is used to separate a mixture of liquids based on differences in boiling points?
- A.
Distillation
- B.
Filtration
- C.
Titration
- D.
Chromatography
- 6.A student observed the following reaction: After the products were filtered, which substance remained on the filter paper?
- A.
Substance A
- B.
Substance B
- C.
Substance C
- D.
Substance D
- 7.Which is considered to be a chemical change?
- A.
Evaporating of rain water
- B.
Crushing ice
- C.
Decomposition of water into hydrogen and oxygen
- D.
Dissolving NaCl in water
- 8.Which pahse change is endothermic?
- A.
Gas to liquid
- B.
Liquid to solid
- C.
Liquid to gas
- D.
Gas to solid
- 9.Energy of position or stored energy is also called:
- A.
Chemical energy
- B.
Potential energy
- C.
Kinetic energy
- D.
Activation energy
- 10.What unit is used to express the amount of energy absorbed or released during a chemical reaction?
- A.
Degree
- B.
Gram
- C.
Torr
- D.
Joule
- 11.
![What Kelvin temperature is the same as -13C? - ProProfs]( "What Kelvin temperature is the same as -13C?")
What Kelvin temperature is the same as -13C?- A.
260 K
- B.
747 K
- C.
286 K
- D.
773 K
- 12.As the temperature of a gas in increased, the average kinetic energy of its molecules
- A.
Increases
- B.
Decreases
- C.
Remains the same
- 13.Which beaker has the lowest kinetic energy?
- A.
A
- B.
B
- C.
C
- D.
D
- 14.
![The graph below represents the uniform cooling of a substance starting as a gas at 160 C. At what temperature does a phase change occure for this substance? - ProProfs]( "The graph below represents the uniform cooling of a substance starting as a gas at 160 C. At what temperature does a phase change occure for this substance?")
The graph below represents the uniform cooling of a substance starting as a gas at 160 C. At what temperature does a phase change occure for this substance?- A.
0*C
- B.
40*C
- C.
80*C
- D.
140*C
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