Quiz: Do you know the cold hard facts about your freezer?

Estimated Completion Time
3 min
Which of the following is a good storage method to prevent bacteria from causing food decay?
Never refrigerate baked goods.
Store dairy products at room temperature.
Freeze food to temperatures below 32 degrees Fahrenheit (zero degrees Celsius).
Even the Mesopotamians realized that cold deters food spoilage. Freeze food to temps below 32 degrees Fahrenheit (zero degrees Celsius) to inhibit the growth of bacteria.

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How was food "frozen" in ancient times?
Food was stored in pits covered with snow.
As far back as the Mesopotamian civilization, pits were dug and lined with straw or sand. Food was then placed inside, and the pits were covered with snow.
Food was stored in mountain areas.
Food was stored in cold water.

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What were the early forms of "freezers" that were created in the late 1600s?
icehouses that were packed with ice and snow
The English and French each had variations on the same idea: ice "houses," often covered with thatched roofs, that could keep food cold for about a year, provided there was enough ice brought in from nearby frozen lakes and rivers.
pits dug deep underground that would freeze overnight
short, round structures made of ice bricks

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When did modern iceboxes fade from popularity?
1890s
1920s
The modern icebox, which is the predecessor of the modern freezer, began to fade out of popularity in the 1920s.
1940s

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What's the main difference between a refrigerator and a freezer?
Freezers have more insulation than fridges.
Fridges have more insulation than freezers.
They are the same appliance, just with different temperature settings.
The only significant difference is that the refrigerant moves through the freezer more rapidly than the fridge. The faster the refrigerant moves, the lower the temperature. The two appliances are made the same way, and the difference in their appearance is purely aesthetic.

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What is meant by the word "refrigerant?"
a chemical used to lower air temperature
A refrigerant is a chemical that lowers air temperature while absorbing surrounding heat. In the 1800s, inventor Jacob Perkins tested refrigerants while working to patent freezing contraptions.
a brand name for a commercial refrigerator
a person with an unfriendly demeanor

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Which chemical was used as a refrigerant in early freezer models?
asbestos
ether
American inventor Jacob Perkins used ether as a refrigerant, and French inventor Ferdinand Carre experimented with ammonia.
arsenic

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What is the most common refrigerant used today?
ammonia
ether
hydrofluorocarbons (HFCs)
Today the most common refrigerants, and the ones considered to be least harmful to the ozone layer, are hydrofluorocarbons (HFCs).

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What's the purpose of the compressor?
It compresses and heats the refrigerant.
The aptly named compressor compresses and heats the refrigerant, which is transformed into a high-pressure state before moving into the condenser.
It compresses the coils at the back of the freezer.
It compresses air that's being circulated by the fan.

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Why does a freezer sometimes feel warm on the outside?
because heat is given off from the condenser coils
The exterior of the freezer is often warm to the touch because of the heat that is given off from the condenser coils.
because it's a sign the freezer needs more refrigerant
because the warmer it is on the outside, the colder it is on the inside

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What is the name of the tube that carries the refrigerant toward the evaporator?
condenser tube
evaporator tube
metering tube
Connecting the condenser coils to the evaporator coils is the metering tube. The refrigerant passes through this narrow tube under high pressure.

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Of the different fridge/freezer layout combinations, which one uses the least power?
the side-by-side fridge/freezer
fridge on top/freezer on bottom
The fridge/freezer design with the freezer on the bottom consumes the least energy.
fridge on bottom/freezer on top

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What's the purpose of the "cooling zone" compartment?
to cool the fridge/freezer by zones
to cool the freezer to ultra-low temperatures
to channel very cold air to specific places inside the refrigerator
The cooling zone is an optional feature in some freezers, whereby very cold air can be channeled to areas of the refrigerator that hold food with the shortest shelf life, such as milk and other dairy.

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What is the difference between a stand-alone freezer and a deep freezer?
The deep freezer can freeze food at lower temps than the stand-alone.
The stand-alone can freeze food at lower temps than the deep freezer.
There is no difference.
Don't give yourself a brain freeze over this one; the terms are interchangeable. They both mean freestanding freezer units.

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What does a commercial freezer usually have that a home freezer doesn't?
stainless steel doors
high-efficiency refrigerant compression
reinforced aluminum floors that can take heavy weight
Because commercial freezers are usually much larger than home models, they often have reinforced aluminum floors to hold the extra weight of all the food in the freezer.

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What can cause excess frost in a freezer?
a refrigerant that loses its pressure
poor sealing of the freezer door
If there's frost, check that the freezer door closes tightly and that the rubber seal isn't loose.
very hot exterior temperatures

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How can you prevent freezer frost?
Have the freezer serviced every six months.
Keep a box of baking soda in the freezer.
Set the temperature to exactly zero degrees Fahrenheit (minus 17 degrees Celsius) and open the door only as needed.
Be a stickler when it comes to the temperature setting: zero degrees Fahrenheit (-17 degrees Celsius), no more, no less. And only open the freezer door when necessary.

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What is the ideal distance you should have between the freezer coils and the wall?
3 to 5 inches (7.6 to 12.7 centimeters)
The ideal distance between the freezer coils and the wall is 3 to 5 inches (7.6 to 12.7 centimeters).
6 to 8 inches (15.2 to 20.3 centimeters)
9 to 11 inches (22.9 to 27.9 centimeters)

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Which of these are common bonus features in a modern freezer?
automatic freezer lock
soft-freeze setting for ice cream and other treats
automatic ice maker and automatic defrost
Popular bonus features include an automatic ice maker and an automatic defrost.

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What does the digital external temperature regulator do?
It regulates the external room temperature.
It lets you set the freezer temperature inside the unit.
A nifty invention, it allows you to set the freezer temperature from the outside without having to freeze your hand while fiddling with a frozen switch inside.
It overrides the internal manual temperature settings.

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