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Study Guide: Chemical Reactions Unit Test

Last updated 11 months ago
10 questions
1
Exothermic reaction:
Heat is _____________ and the object gets ________
Other Answer Choices:
hot
released
showered
cold
consumed
1

Lighting a match is an ___________ process as the object gets hot

1
Combustion engines in cars burn gasoline and the engine gets hot. This is an __________.
This process turns chemical energy into __________ (motion)
1
Endothermic reactions __________ by the system.

An example of this is when __________, as it takes in energy from the environment and begins to physically change.

Another example of an endothermic process is the Sun warming up the cold water in Lake Superior. The Sun is the __________ and the Lake is the __________ that is taking in energy from the surroundings.
1
Ice tea in the hot sun __________
Photosynthesis __________
Hot pack __________
A baking soda volcano __________
1

Complete the Diagram

1

Tom Holland mixes two beakers he found in the lab; beaker X with beaker Y to make beaker Z. Tom Holland knows that a new substance is made if the density of Z is different than X and Y. The density of X and Y was the actually same, 10g/mL. Complete the chart below to find the density of Z (hint: Density = mass/volume). Then determine if Z is a new substance or not.

Density = Mass / Volume

1
Fats, carbohydrates, and proteins are dissolved by the blood and delivered to the liver to be detoxified. What is the solvent and what is the solute in this case? Label the answer
Other Answer Choices:
solute
solvent
1

Take socrative.com and then type your points/score
Room Name: X5EB2CTM6

1

Extra credit
Watch these videos about penguins and complete the diagram