| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.73 |
| Score | 0% | 75% |
Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.
equal numbers of |
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more |
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double the number of |
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fewer |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
Which of these vitamins doesn't come from food?
C |
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D |
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A |
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Potassium |
Vitamins are necessary for a wide variety of bodily processes. Some vitamins like Vitamins A and C come from diet but others, like Vitamin D, are generated in response to sunlight.
The energy posessed by a thrown baseball is an example of what kind of energy?
kinetic |
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gravitational |
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transitional |
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potential |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
neutron |
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proton |
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electron |
|
atom |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
Elements in the Periodic Table of the Elements are ordered by which of the following?
atomic mass |
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number of electron shells |
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atomic number |
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atomic weight |
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.