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TEKS Grade 6 Science -112.18.b.5.c-Evidence of Chemical Change

Quiz by TEKS Grade 6 Science

Grade 6
Science (2017)
Texas Essential Knowledge and Skills (TEKS)

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includes Teacher and Student dashboards

Measures 1 skill from
Grade 6
Science (2017)
Texas Essential Knowledge and Skills (TEKS)

6.5c

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12 questions
Show answers
  • Q1
    True or False - A physical change causes a substance to change states of mater, for example, from solid to liquid.
    True
    False
    30s
    6.5c
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    Delete
  • Q2
    True or False - A chemical change produces a new substance with similar properties.
    True
    False
    30s
    6.5c
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    Delete
  • Q3
    Which of the following is NOT evidence that a new substance is forming in an experiment?
    Unexpected Color Change
    Smoke from a burning match.
    Powder dissolving in a liquid.
    Solid particles sinking to bottom of test tubes
    60s
    6.5c
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    Delete
  • Q4
    Students are given a sample of an unknown material. They want to perform tests to determine its identity. Which test is MOST LIKELY to change the sample into another material?
    Chopping the material into little pieces
    Melting the substance
    Burning the unknown material
    Dissolving it in water
    60s
    6.5c
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  • Q5
    The contents of a sliced apple reacts with the air around it and starts turning brown. What is the best evidence that a new substance with different properties has formed?
    Temperature of the apple increases
    Extreme odor changes
    A precipitate forms
    The unexpected color change of the apple's flesh.
    60s
    6.5c
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  • Q6
    Students are completing a lab investigation that requires them to burn sugar. The sugar starts to boil when heated, and the smoke produced smells sweet. The end product is dark syrupy substance. Which of the following would be the BEST evidence of chemical reaction?
    The sugar gets hotter.
    The sugar boils.
    The sugar turns into a colorless liquid.
    The sugar turns dark.
    60s
    6.5c
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  • Q7
    What conclusion can be made about the four investigations in the table?
    Question Image
    Investigation #2 is physical change due to gas released
    Investigation #1 is a physical change because solids formed from liquids.
    None of the above.
    Investigation #3 is not a chemical change, because one liquid floats above the other
    60s
    6.5c
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  • Q8
    A student uses a strip of Zinc (silvery metal) and combines it with hydroelectric acid inside a beaker. As the substances come into contact with one another, the following happens: bubbles form. Which portion of the chemical reaction shows evidence a new substance has formed?
    The hydroelectric acid does not react
    The liquid in the beaker does not change color
    The silver color on the Zinc strip.
    The bubbles provide evidence that a gas is produced
    60s
    6.5c
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  • Q9
    A students places a sample of sodium (soft silvery metal) in a beaker of water. The combination starts making a loud popping sound, lights up and smoke is seen. What is the evidence produced during the chemical reaction?
    Loud pops produced gas
    Smoke only
    The water changed color
    Change in energy (sound, light, and smoke)
    60s
    6.5c
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  • Q10
    A student combined a clear liquid with a strong odor with purple cabbage juice. When combined, the product immediately turned green. After sitting for a while, the product turned yellow. What is the evidence that a new substance was formed?
    Question Image
    Steam release from the experiment.
    Clear liquid's odor
    Unexpected change in color
    Particles settling at the bottom of liquid
    60s
    6.5c
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  • Q11
    A student mixed water and one package of red Kool-Aid, which produced a red liquid with powder settling at the bottom of the container. The student claimed that water and Kool Aid result in a chemical change. What makes this claim false?
    Question Image
    Steam released from the red liquid.
    Odor change
    Gas release
    The expected color change of the clear liquid.
    60s
    6.5c
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  • Q12
    Which substance final appearance does not support an unexpected color change?
    Question Image
    Substance 2
    Substance 1, 2, 4
    Substance 1
    Substance 4
    60s
    6.5c
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