| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.69 |
| Score | 0% | 74% |
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
bone |
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endoskeleton |
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exoskeleton |
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vertebrate |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
Water freezing or boiling is an example of which of the following?
cooling |
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phase transition |
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sublimation |
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heating |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
In which type of compound are electrons shared between atoms?
chemical |
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molecular |
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covalent |
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ionic |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In covalent compounds, electrons are shared between atoms. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.
A __________ is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound.
isotope |
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ion |
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molecule |
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neutron |
A molecule is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound. The molecules of elements consist of two or more similar atoms, the molecules of compounds consist of two or more different atoms.
The energy posessed by a thrown baseball is an example of what kind of energy?
potential |
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transitional |
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gravitational |
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kinetic |
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.