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14 Cards in this Set
- Front
- Back
chemical
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any substance that has definite composition
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Ozone
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chemical that forms a protective layer in Earth's atmosphere
formed in stratosphere when ultraviolet radiation strikes Ox |
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ozone hole
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thinning of ozone layer over Antartica
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CFC's
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synthetic chemicals made of chlorine, fluorine & carbon
used as refrigerants and propellants in aerosol cans |
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Chemistry
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study of matter and the changes it undergoes
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Matter
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anything that has mass and takes up space
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Mass
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a measure of the amount of matter
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Weight
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measure not only o an amount of matter but also the effect of Earth's gravitational pull on that matter
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5 traditional branches of Chemistry
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organic, inorganic, physical, analytical and biochemistry
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5 steps of scientific method
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observation, hypothesis, experiments, data analysis, & conclusion
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pure research
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research that seeks to gain knowledge for the sake of knowledge itself.
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technology
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practical use of scientific information
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theory
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explanation supported by many, many experiments
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model
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visual. verbal and or mathematical explanation of experimental data
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