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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12 questions
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- Q1True or False - A physical change causes a substance to change states of mater, for example, from solid to liquid.TrueFalse30s6.5c
- Q2True or False - A chemical change produces a new substance with similar properties.TrueFalse30s6.5c
- Q3Which of the following is NOT evidence that a new substance is forming in an experiment?Unexpected Color ChangeSmoke from a burning match.Powder dissolving in a liquid.Solid particles sinking to bottom of test tubes60s6.5c
- Q4Students 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 piecesMelting the substanceBurning the unknown materialDissolving it in water60s6.5c
- Q5The 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 increasesExtreme odor changesA precipitate formsThe unexpected color change of the apple's flesh.60s6.5c
- Q6Students 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.60s6.5c
- Q7What conclusion can be made about the four investigations in the table?Investigation #2 is physical change due to gas releasedInvestigation #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 other60s6.5c
- Q8A 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 reactThe liquid in the beaker does not change colorThe silver color on the Zinc strip.The bubbles provide evidence that a gas is produced60s6.5c
- Q9A 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 gasSmoke onlyThe water changed colorChange in energy (sound, light, and smoke)60s6.5c
- Q10A 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?Steam release from the experiment.Clear liquid's odorUnexpected change in colorParticles settling at the bottom of liquid60s6.5c
- Q11A 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?Steam released from the red liquid.Odor changeGas releaseThe expected color change of the clear liquid.60s6.5c
- Q12Which substance final appearance does not support an unexpected color change?Substance 2Substance 1, 2, 4Substance 1Substance 460s6.5c
