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34 Cards in this Set
- Front
- Back
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Best Fit Line |
The line that comes as close as possible to as many of the points as possible |
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Dependent Variable |
The variable that changes as a result of the experiment |
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Experiment |
A controlled observation |
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Hypothesis |
An educated guess |
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Independent Variable |
The variable we manipulate |
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Interpretation |
A statement about data |
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Observation |
Something that is sensed with the senses or can be measured |
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Quantity |
A number with a unit |
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Scientific Law |
An interpretation whose exceptions are well understood |
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Theory |
An interpretation that is supported by lots of data |
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Activities of Science |
1). Observation 2). Search for regularities 3). Making Hypothesis 4). Theories and laws |
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Mass |
Kilogram (kg) |
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Length |
Meter (m) |
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Time |
Seconds (s) |
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Temperature |
Kelvin (K) |
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Chemical Amount |
Mole (mol) |
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Electric Current |
Ampere (A) |
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Light Intensity |
Candela (cd) |
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Chemical Change |
A change in the substances present |
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Chemical Property |
A property that depends on the interaction of matter with other matter |
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Compound |
A substance whose molecules contain more than one kind of atom |
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Diatomic element |
An element whose molecules contain two atoms |
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Element |
A substance whose molecules contain only one kind of atom |
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Extensive Property |
A property whose value depends on the amount of matter present |
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Heterogeneous |
Not completely uniform |
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Homogeneous |
Completely uniform |
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Intensive property |
A property whose value does not depend on the amount of matter present |
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Mixture |
Matter made of more than one kind of molecule |
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Molecule |
A group of atoms strongly bound together |
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Physical Change |
A change that does not involve changing the substances present |
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Physical Property |
A property of the matter itslef |
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Solution |
A homogeneous mixture |
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Substance |
Matter that contains only one kind of molecule |
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8 Diatomic Elements |
Oxygen (O) Hydrogen (H) Nitrogen (N) Fluorine (F) Chlorine (Cl) Bromine (Br) Iodine (I) Astatine (At) |
