Lab: Rate of Chemical Reactions — Unit test Answers
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This chart lists four kinds of polymers and their sources.What can be known about all four polymers, despite their differences?
A
They come from living things.B
They share ionic carbon bonds.C
They are at least 100 monomers long.D
They are made of repeating subunits.22
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Shiloh wanted to observe the changes that occurred during an exothermic reaction. He monitored the changes and placed them in a chart. Which statement best describes his data?
A
The activation energy was reached at 10:45 a.m. Without the additional energy, the reaction would have stopped.B
The activation energy was reached at 11:15 a.m. The previous change was the threshold point for a reaction.C
The activation energy was reached at 10:15 a.m. The additional energy allowed for a lower activity level.D
The activation energy was reached was 10:45 a.m. The additional energy did not affect the reaction.23
Giovanni created this chart to study for an exam.Which best describes how to correct the error in the chart?
A
Remove “plastics” from the uses for sodium hydroxide.B
Swap the uses for iron oxide and calcium carbonate.C
Change the use for calcium chloride to “used in preservatives.”D
Add “de-ice roads” to uses for calcium carbonate.Did you find these answers helpful?
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