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Chemistry Unit Review

Quiz by Mrs. Ingram

Grade 6-8
Science
Next Generation Science Standards

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25 questions
Show answers
  • Q1
    What is the difference between the substances represented by the symbols Co and CO?
    Co represents the element cobalt, and CO represents the element copper.
    They represent two substances, each made up of two elements.
    One is the symbol for an element, and one is a formula for a compound.
    They are two different ways to represent the element cobalt
    300s
    MS-PS1-1
  • Q2
    Name the elements in water.
    oxygen and carbon
    water
    hydrogen and carbon
    hydrogen and oxygen
    300s
    MS-PS1-1
  • Q3
    A student mixes a white solid and a clear liquid together. The mixture begins to bubble and fizz. Is this evidence that a chemical reaction occurred?
    Yes
    No
    300s
    MS-PS1-2
  • Q4
    A student mixes a white solid and a clear liquid together. The mixture becomes orange. Is this evidence that a chemical reaction occurred?
    Yes
    No
    300s
    MS-PS1-2
  • Q5
    A student mixes a white solid and a clear liquid together. The solid disappears into the liquid. Is this evidence that a chemical reaction occurred?
    Yes
    No
    300s
    MS-PS1-2
  • Q6
    Look at the atomic model for sodium carbonate. How many atoms are in sodium carbonate?
    Question Image
    6
    3
    5
    2
    300s
    MS-PS1-5
  • Q7
    Look at the atomic model for sodium carbonate. How many elements are in sodium carbonate?
    Question Image
    5
    6
    2
    3
    300s
    MS-PS1-5
  • Q8
    True or False: You can create matter.
    False
    True
    300s
    MS-PS1-5
  • Q9
    What happens to air particles in a syringe when they are compressed?
    They move apart and slow down.
    They move closer together and speed up.
    300s
    MS-PS1-4
  • Q10
    What phase of matter has particles that are bonded so tightly together that they can only vibrate?
    solid
    liquid
    gas
    300s
  • Q11
    What phase of matter has loosely bonded particles that can flow over one another?
    liquid
    solid
    gas
    300s
    MS-PS1-4
  • Q12
    What phase of matter has particles that are not bonded together and can move freely?
    gas
    liquid
    solid
    300s
    MS-PS1-4
  • Q13
    What happens when the kinetic energy of an object is increased?
    It heats up and expands.
    It cools down and contracts.
    300s
    MS-PS1-4
  • Q14
    What is the name of the phase change when a solid turns into a liquid?
    Evaporation
    Freezing
    Melting
    300s
  • Q15
    What is the name of the phase change when a gas turns into a liquid?
    evaporation
    freezing
    condensation
    300s
    MS-PS1-4

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