Quarterly Assessment 1-regents Chemistry

14 Questions | By Etucci | Last updated: Feb 11, 2013 | Total Attempts: 130

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Quarterly Assessment 1-regents Chemistry

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.

The particle diagram below represents a sample of matter. Which best describes the composition of the sample?
- 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?
- 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?
- A.
  
  0*C
- B.
  
  40*C
- C.
  
  80*C
- D.
  
  140*C