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MRE Test2

Last updated almost 3 years ago
17 questions
Required
1

What do the letters M.R.E. stand for?

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3

List 3 ways you know a chemical change/reaction happened when we added water to our flameless heater?

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2
In order for food to stay fresh and not freeze your fridge stays in the temperature range of_______ to _______ (don't forget the symbols for temp scale you used).
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1
Most people enjoy bathing in water that is _______ degrees Fahrenheit.
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1
_______ is the temperature when water begins to scald the human skin (don't forget units).
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3
Food-born diseases can happen when food is left out in the " _______" range between _______ degrees F and _______ degrees F.
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1

What is the chemical formula for root killer (copper sulfate)?

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1

How many elements are in CuSO4?

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1

How many atoms are in CuSO4?

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1

Salt water is NOT a mixture, rather it is a chemical compound.

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1

Is copper sulfate, aluminum foil, and salt water an example of endothermic or exothermic reactions?

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1

Explain how you know the answer to the question: is copper sulfate, aluminum foil, and salt water an exothermic or endothermic reaction?

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1
The design process has _______ steps.
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3

Pick one of the design process steps and tell me three ways we applied that step to redesigning our MRE heater.

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1

In the golden zone, what is the amount of Aluminum Foil we should use?

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1

In the golden zone, what is the amount of Copper Sulfate should we use?

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1

In the golden zone, how much salt water should we use?