Baking a Cake
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Questions and Answers

Which statement BEST explains why baking a cake is evidence of a chemical reaction?

  • The temperature of the ingredients increased as they absorbed thermal energy from the oven.
  • The state of matter of some of the ingredients changed while being cooked.
  • The ingredients formed a new substance after they were cooked in the oven. (correct)
  • The total mass of the ingredients was the same before and after they were cooked.

Which statement BEST describes the motion of the car?

  • The car moved at a variable speed during the 10-second time period, sometimes faster and sometimes slower.
  • The car moved at a constant speed of 5 meters per second throughout the entire 10-second time period.
  • The car moved at a speed of 5 meters per second during the first 5 seconds and then moved at a faster speed during the next 5 seconds.
  • The car moved at a speed of 5 meters per second during the first 5 seconds and then moved at a slower speed during the next 5 seconds. (correct)

Which statement BEST describes the change in state of matter during the cake baking process?

  • The ingredients changed from solid to gas while being cooked in the oven.
  • The ingredients remained in the same state of matter throughout the baking process.
  • The ingredients changed from solid to liquid while being mixed together.
  • The ingredients changed from liquid to gas while being cooked in the oven. (correct)

Which statement BEST describes the change in mass of the ingredients after being cooked?

<p>The total mass of the ingredients remained the same before and after being cooked. (C)</p> Signup and view all the answers

Which statement BEST describes the relationship between the speed of the car and time during the 10-second time period?

<p>The car's speed varied at irregular intervals during the 10-second time period. (C)</p> Signup and view all the answers

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