Name________________________________ Date___________
The goal of this exercise is not necessarily to just get the correct word, though you will lose a point if you don't get the correct word, but to become familiar with using the web site for the textbook study guide. These definitions are simply cut and pasted from the glossary section.
Write the word that corresponds to the definition in the blank provided.
| ____________ | Minute unit made of subatomic particles that is the basic building block of all chemical elements and thus all matter; the smallest unit of an element that can exist and still have the unique characteristics of that element.
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| ____________ | Scientific data, models, theories, and laws that are widely accepted by scientists considered experts in the area of study. These results of science are very reliable.
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| ____________ | Chemical, such as hydrogen (H), iron (Fe), sodium (Na), carbon (C), nitrogen (N), or oxygen (O), whose distinctly different atoms serve as the basic building blocks of all matter. There are 92 naturally occurring elements. Another 26 have been made in laboratories. Two or more elements combine to form compounds that make up most of the world’s matter.
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| ____________ | Circuit of sensing, evaluating, and reacting to changes in environmental conditions as a result of information fed back into a system; it occurs when one change leads to some other change, which eventually reinforces or slows the original change.
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| ____________ | Organic compound of hydrogen and carbon atoms. The simplest hydrocarbon is methane (CH4), the major component of natural gas. |