| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
In the Periodic Table of the Elements, atomic number is equal to which of the following?
number of protons in the nucleus |
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number of electrons orbiting the nucleus |
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number of protons + neutrons in the nucleus |
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number of neutrons in the nucleus |
The Periodic Table of the Elements categorizes elements primarily by the number of protons in their nucleus (atomic number) and secondarily by the characteristics they exhibit.
Which of these is not a type of fat?
saturated |
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cholesterol |
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monounsaturated |
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polyunsaturated |
Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils).
Stratus clouds are __________clouds characterized by horizontal layering with a broad flat base.
mid-altitude |
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all-altitude |
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high-altitude |
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low-altitude |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
Which of the following is the smallest component of an element that still retains the properties of the element?
element |
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atom |
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molecule |
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neutron |
An atom is the smallest component of an element that still retains the properties of the element.
Absolute zero is which of the following?
the freezing point of oxygen |
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the freezing point of hydrogen |
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0°C |
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the coldest temperature possible in the universe |
In contrast to the Celsius scale (measured in degrees centigrade) that fixes 0° at the freezing point of water and the Fahrenheit scale that uses 32°, the Kelvin scale fixes 0 at absolute zero (-273°C) which is the lowest temperature possible in the universe.