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Science Quiz Unit 1 Lesson 3

Quiz by Shayna Fox

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15 questions
Show answers
  • Q1
    What are chemical changes?
    A process by which one or more substances change into entirely new substances with different properties.
    A change that affects one or more physical properties of a substance that do not change the identity of the substance.
    30s
  • Q2
    What becomes rearranged when a chemical change occurs?
    The temperature of an object
    particles and chemical bonds
    nothing
    30s
  • Q3
    What are three examples of a physical change?
    boiling, writing something on a piece of paper, Wood turning to ash
    something tearing, something changing into an unusual color, something beginning to ripen
    Ice melting, cutting an apple, something painted
    30s
  • Q4
    What does the law of conservation of mass state?
    In ordinary chemical and physical changes, mass is not created or destroyed → but only transformed into different substances.
    In ordinary chemical and physical changes, mass is created or destroyed.
    In ordinary chemical and physical changes, mass stays the same.
    30s
  • Q5
    Physical changes:
    A change that affects one or more physical properties of a substance that do not change the identity of the substance.
    A process by which one or more substances change into entirely new substances with different properties.
    30s
  • Q6
    What three potential things can change, during a physical change?
    The appearance, shape, or texture
    The appearance, shape, or smell
    The appearance, shape, or size
    30s
  • Q7
    Are chemical changes the same as chemical properties? Explain
    No, Chemical property = ability of a substance to undergo a chemical reaction, chemical change = what happens when chemical reaction occurs
    Yes, Chemical property and change are both the ability of a substance to undergo a chemical reaction
    Yes, Chemical change and property are both what happens when a chemical reaction occurs
    30s
  • Q8
    What can make a chemical change occur more quickly?
    Higher temperature
    Colder temperature
    Pressure
    30s
  • Q9
    What are the five signs that show a chemical change has occurred?
    Change in size change in shape change in appearance change in temperature change in energy
    1: change in color 2: the object is heavier than usual 3: the size of the object changes 4: It is harder 5: If its water - boiling
    Odors Change in energy Gas Formation of participate Change in color - unusual
    30s
  • Q10
    Suppose a log of wood weighs 12 pounds. After burning, the mass of the ash is less than 1 lb. What may have happened to the other 11 pounds?
    The other 11 pounds evaporated into the air
    The other 11 pounds became part of the fire
    The other 11 pounds either turned into: Gas Soot Ash
    30s
  • Q11
    Chemical or Physical: Milk souring
    Chemical
    Physical
    30s
  • Q12
    Physical or Chemical: Ice Melting
    Chemical
    Physical
    30s
  • Q13
    Physical or Chemical Grass growing
    Physical
    Chemical
    30s
  • Q14
    Physical or Chemical Burning a marshmallow
    Chemical
    Physical
    30s
  • Q15
    Physical or Chemical Boiling water
    Chemical
    Physical
    30s

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