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									Name: ___________________________________________________ Section: _______
Matter: Atoms and Properties

Directions: For each of the questions or incomplete statements below, choose the best of
the answer choices given and write your answer on the line.

1. _______What does the diagram below show about matter?




                 a)   Matter is made up of elements.
                 b)   Matter takes up space.
                 c)   Matter is a solid.
                 d)   Matter has mass.

2. _______Which is not an example of matter?
                 a) water                           c) gold
                 b) air                             d) sound

3. _______The amount of space an object occupies is called its
                 a) volume.                         c) weight.
                 b) mass.                           d) length.

4. _______Atoms in a molecule are joined together by
                 a)   chemical bonds
                 b)   magnetism
                 c)   electricity
                 d)   gravity

5. _______The circles in the closed jars shown below represent particles of matter.
    Which jar most likely contains a solid?




                 a) jar 1                           c) jar 3
                 b) jar 2                           d) jar 4


Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
6. _______In which state of matter are particles farthest apart and moving the fastest?
                 a)   solid
                 b)   liquid
                 c)   gas
                 d)   Bose-Einstein Condensate

7. _______When you pour water from a beaker into a flask, there is a change in the
    water’s
                 a) mass.                           c) shape.
                 b) volume.                         d) density.

8. _______Which statement best describes why atoms are electrically neutral?
                 a) Subatomic particles have no charge at all.
                 b) The number of negative electrons equals the number of all positive
                    protons.
                 c) Atoms contain only neutrons which have no charge.
                 d) Protons are in the nucleus, while electrons are outside the nucleus.

9. _______Condensation refers to a change in state from a
                 a)   solid to a liquid.
                 b)   liquid to a solid.
                 c)   liquid to a gas.
                 d)   gas to a liquid.

10._______The temperature at which a substance melts is the same temperature at which it
                 a)   boils.
                 b)   freezes.
                 c)   condenses.
                 d)   evaporates.


Refer to a Periodic Table of the Elements to answer questions 11-13.


11._______Which of the following elements can be classified as a metal?
                 a)   O (oxygen)
                 b)   He (helium)
                 c)   Na (sodium)
                 d)   Cl (chlorine)

12._______Which element would be a poor conductor of electricity?
                 a)   Fe (iron)
                 b)   Cu (copper)
                 c)   Au (gold)
                 d)   S (sulfur)


Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
13._______In which group of The Periodic Table would you place an element that has
    most or all of the following properties: solid; nonconductor of heat and electricity;
    forms a molecule with two hydrogen atoms?
                a) group 1                     c) group 16
                b) group 2                     d) group 18

14._______Which of the following materials is soluble in water?
                 a) oil                             c) sand
                 b) salt                            d) grease

15._______Which of the following combinations would dissolve the fastest?
                 a)   sugar cubes in iced tea
                 b)   granulated sugar in iced tea
                 c)   sugar cubes in hot tea
                 d)   granulated sugar in hot tea

16._______When dissolving salt in water, the salt is considered to be the
                 a) solvent.                        c) mixture.
                 b) solute.                         d) solution.

Use the information below to answer questions 17 through 19.

      A student measures the mass and volume of four pieces of metal. The results are
shown in the following table.




17._______Which metal is the densest of the four pieces measured?
                 a) metal A                         c) metal C
                 b) metal B                         d) metal D

18._______Which two pieces might be made of the same metal?
                 a) A and B                         c) A and D
                 b) B and C                         d) C and D

19._______The density if a 100.0-gram sample of metal A should be
                 a)   5.0 g/cm3.
                 b)   10 g/cm3.
                 c)   50 g/cm3.
                 d)   100 g/cm3.

Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
Questions 20 and 21 refer to the diagram below, which shows the relative densities
of some liquids and solids at room temperature.




20._______Which liquid in the diagram is least dense?
                 a) wood                            c) iron
                 b) water                           d) mercury

21._______Which solid in the diagram is most dense?
                 a) wood                            c) iron
                 b) water                           d) mercury

22._______Which of the following processes could be used to separate a mixture of salt
    and water?
                 a)   burning the water
                 b)   evaporating the water
                 c)   filtering the salt
                 d)   using a magnet

23._______Which is only a physically change?
                 a)   souring of milk
                 b)   burning of oil
                 c)   melting of ice
                 d)   rusting of iron

24._______Which process involves a chemical change?
                 a)   photosynthesis
                 b)   boiling water
                 c)   freezing water
                 d)   melting ice

25._______A chemical change always
                 a)   forms one or more new substances.
                 b)   absorbs heat.
                 c)   releases heat.
                 d)   absorbs electricity.



Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
26._______In making an omelet, which process involves a chemical change?
                 a)   melting butter
                 b)   chopping onions
                 c)   frying eggs
                 d)   adding salt

27._______A chemist mixed sodium and chlorine, but no reaction took place. A
    probable explanation for this outcome is that
               a) the reaction only releases energy.
               b) the reaction only absorbs energy.
               c) these substances cannot react.
               d) energy must be added to start a reaction.

28._______During a chemical change, energy is
                 a)   always released.
                 b)   always absorbed.
                 c)   either absorbed or released.
                 d)   neither absorbed or released.

29._______When making iced tea, Aidan noticed that there was less ice after he mixed
    the ice with the hot tea. On observing this, Aidan remembered that melting is a
                a) chemical change in which energy is absorbed.
                b) chemical change in which energy is released.
                c) physical change in which energy is absorbed.
                d) physical change in which energy is released.

30._______Hydrogen gas is produced in a chemical reaction between zinc and an acid.
    Which setup below would most likely have the fastest reaction?




                 a)   a zinc strip at 20 degrees Celsius (1)
                 b)   powdered zinc at 20 degrees Celsius (2)
                 c)   a zinc strip at 30 degrees Celsius (3)
                 d)   powdered zinc at 30 degrees Celsius (4)


Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
31._______Food cooks faster at a higher temperature. This is because as the
    temperature increases, the rate of chemical reaction usually
              a) increases.
              b) decreases.
              c) remains the same.
              d) Not enough information.

32._______The diagram shows four samples of wood, each with a mass of one kilogram.
    Which sample would most likely burn the fastest?




                 a) log                             c) toothpicks
                 b) planks of wood                  d) sawdust

33._______Which change would be the most difficult to reverse?
                 a)   melting ice cube, because it is a physical change
                 b)   dissolving sugar in water, because it is a chemical change
                 c)   burning a match, because it is a chemical change
                 d)   rusting an iron nail, because it is a physical change

34._______George cracks open an egg and finds that it has a very bad smell. The egg
    has become rotten. This is best described as
              a) physical, because no new substance was formed.
              b) physical, because a new substance was formed.
              c) chemical, because no new substance was formed.
              d) chemical, because a new substance was formed.

35._______A molecule of carbon dioxide (CO2) is made of one atom of carbon and two
    atoms of oxygen. Carbon dioxide is best classified as
               a) an element because it is made of one type of atom.
               b) an element because it is made of two types of atoms.
               c) a compound because it is made of one type of atom.
               d) a compound because it is made of two types of atoms.

36._______Which subatomic particles are found outside the nucleus of an atom?
                 a)   positively charged protons
                 b)   positively charged electrons
                 c)   negatively charged protons
                 d)   negatively charged electrons


Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
37._______The diagram below represents an atom of helium. Based on this diagram,
    which statement is true?




                 a)   The positively charged protons are found outside the nucleus.
                 b)   The positively charged protons are found inside the nucleus.
                 c)   The negatively charged protons are found outside the nucleus.
                 d)   The negatively charged protons are found inside the nucleus.

38._______When 12 grams of carbon (C) react with exactly 32 grams of oxygen (O),
    carbon dioxide is formed. The mass of the carbon dioxide is
               a) greater than 55 grams.
               b) equal to 44 grams.
               c) less than 44 grams.
               d) not determinable.

39._______Four grams of hydrogen react with oxygen from the air to form 36 grams of
    water. How many grams of oxygen were used?
             a) 9
             b) 40
             c) 16
             d) 32




Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
   Name: _____________________________________ Section: ______
Matter: Atoms and Properties – Open Response Question 1

Two different bars of soap are being investigated by a group of students. They measured
the mass and volume of each bar and recorded the results in the table below.

                             Soap        Mass (g)          Volume (cm3)

                              A            110                  100

                              B             95                  100



                                    Density of water = 1.0 g/cm3

    a) Calculate the density of each bar of soap. Show your work.



    b) The diagram below represents a container of water. Draw and label
       the positions that soap bar A and soap bar B would occupy if they
       were placed in this container.




    c) Explain why you drew each bar of soap in the position selected.




Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
Name: ______________________________________ Section: ______
Matter: Atoms and Properties – Open Response Question 2

A science class is studying physical and chemical changes.


The teacher puts a beaker of water onto a hot plate and heats it until bubbles appear.

    a) Classify this as a physical or chemical change. Explain your
       reasoning using specific details.

The teacher puts a sugar cube into a container of warm water. Eventually the sugar cube
is no longer visible.

    b) Classify this as a physical or chemical change. Explain your
       reasoning using specific details.

The teacher pours vinegar into a small container of baking soda. The combined
substances begin to fizz and bubble as a gas is released.

    c) Classify this as a physical or chemical change. Explain your
       reasoning using specific details.




Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.
Name: ______________________________________ Section: ______
Matter: Atoms and Properties – Open Response Question 3

The diagram below shows a model in an open container. The model represents
the arrangement of particles of matter in a solid phase.




    a) Draw a diagram showing the arrangement of these particles in a liquid
       phase. Explain why the particles have this arrangement. Be sure to
       describe the energy of the particles

Draw a diagram showing the arrangement of these particles in a gas phase.
Explain why the particles have this arrangement. Be sure to describe the
energy of the particles.




Adapted from: Cohen, P. S., Deutsch, J., & Sorrentino, A. (2004). Preparing for the NJ GEPA - Science.
New York: Amsco School Publications, Inc.

								
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