Matter And Energy Unit Test 701

25 Questions | Total Attempts: 372

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Matter And Energy Unit Test 701

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Questions and Answers
  • 1. 
    Chemical and physical changes are a part of everyday life. What are 2 ways that humans use chemical changes and physical changes to their advantage? (Use RAFFT or any short response technique to answer this quesiton in the space provided)
  • 2. 
    The tiny particles that make up all matter are called
    • A. 

      Genes

    • B. 

      Atoms

    • C. 

      Minerals

    • D. 

      Cells

  • 3. 
     Which model is used by scientists to determine the properties of elements?
    • A. 

      A Punnett square

    • B. 

      The Periodic Table

    • C. 

      A pedigree chart

    • D. 

      The rock cycle

  • 4. 
    Some common substances and their chemical formulas are listed in the chart below. Which of these substances are elements?
    • A. 

      Hydrochloric acid and carbonic acid

    • B. 

      Carbon dioxide and water

    • C. 

      Oxygen and water

    • D. 

      Helium and oxygen

  • 5. 
    Which statement is true about the charges assigned to an electron and a proton?
    • A. 

      Both an electron and a proton are positive

    • B. 

      An electron is positive and a proton is negative

    • C. 

      An electron is negative and a proton is positive

    • D. 

      Both an electron and a proton are negative

  • 6. 
     The elements on the Periodic Table are arranged in order of increasing
    • A. 

      Atomic number

    • B. 

      Mass number

    • C. 

      Number of isotopes

    • D. 

      Number of moles

  • 7. 
     The diagram below shows the geometric structure of a molecule of water (H2O).  What do the symbols    and    represent in the model?
    • A. 

      Genetic material

    • B. 

      Chemical bonds

    • C. 

      Cells

    • D. 

      Atoms

  • 8. 
     The table below shows the chemical symbols for some common elements. Based on the information in the table, which of the four substance below is a compound?   
    • A. 

      CO

    • B. 

      Si

    • C. 

      Fe

    • D. 

      He

  • 9. 
    Which diagram best represents molecules of matter in the solid phase?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 10. 
     Which substance is usually found in nature as a liquid, solid, and gas?
    • A. 

      Water

    • B. 

      Rock

    • C. 

      Metal

    • D. 

      Glass

  • 11. 
    A wet shirt is put on a clothesline to dry on a sunny day. The shirt dries because water molecules
    • A. 

      Gain heat energy and condense

    • B. 

      Gain heat energy and evaporate

    • C. 

      Lose heat energy and condense

    • D. 

      Lose heat energy and evaporate

  • 12. 
     Which graph correctly shows the effect of heat energy on the motion of molecules of matter?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 13. 
    Which observation would be evidence that the water is undergoing a phase change?
    • A. 

      Waves form on the top of the pond.

    • B. 

      Water soaks into the wet sand.

    • C. 

      The water splashes out of the swimming pool.

    • D. 

      The water level in the glass of water decreases.

  • 14. 
    How is heat energy transferred within the liquid water in the pond?
    • A. 

      Compound formation

    • B. 

      Convection currents

    • C. 

      Chemical reactions

    • D. 

      Nuclear reactions

  • 15. 
    The four diagrams below model the results of mixing atoms of different substances. Each atom is represented by a different symbol. Which diagram correctly models a chemical change?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 16. 
     The diagram below shows a boy observing a fish located at position B below the surface of the water. The boy sees the fish at position A. The apparent position of the fish is different from the actual position of the fish. What has happened to the light passing through the water to cause this difference?
    • A. 

      Reflection

    • B. 

      Absorption

    • C. 

      Compression

    • D. 

      Refraction

  • 17. 
     Hydrochloric acid is added to a beaker containing a piece of zinc. As a result, zinc chloride is formed and hydrogen gas is released. This is an example of
    • A. 

      A chemical reaction

    • B. 

      A physical change

    • C. 

      Photosynthesis

    • D. 

      Evaporation

  • 18. 
    Which form of energy is needed to change water from a liquid to a gas?
    • A. 

      Heat

    • B. 

      Mechanical

    • C. 

      Chemical

    • D. 

      Sound

  • 19. 
     A student crumples up a sheet of paper.  Which property of the paper has changed?
    • A. 

      Color

    • B. 

      Mass

    • C. 

      State

    • D. 

      Shape

  • 20. 
     Sound will not travel in a
    • A. 

      Solid

    • B. 

      Gas

    • C. 

      Liquid

    • D. 

      Vacuum

  • 21. 
     Which statement best describes the property of light waves illustrated in the diagram below?
    • A. 

      Some materials absorb light waves

    • B. 

      Some materials reflect light waves

    • C. 

      Light waves are refracted by some materials

    • D. 

      Light waves are emitted by some materials

  • 22. 
    Which diagram represents electromagnetic energy with the shortest wavelength?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 23. 
     The picture below shows a ringing bell inside a vacuum jar. As air is pumped from the vacuum jar, the sound level of the ringing bell will decrease until it can no longer be heard. This happens because air must be present in the jar in order for
    • A. 

      Sound to be transferred

    • B. 

      Electricity to flow through the wires

    • C. 

      The rubber to seal the jar

    • D. 

      The bell clanger to vibrate

  • 24. 
    A common characteristic of sound waves is that they
    • A. 

      Are created by vibrations

    • B. 

      Travel in straight lines toward the source

    • C. 

      Travel fastest through empty space

    • D. 

      Move at the speed of light

  • 25. 
     When a person speaks into a telephone, sound energy is changed mostly into which form of energy?
    • A. 

      Heat

    • B. 

      Light

    • C. 

      Electrical

    • D. 

      Chemical

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