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36 Cards in this Set
- Front
- Back
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Hypothesis.
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A tentative explanation for a set of observations.
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Law.
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A concise statement of a relationship between phenomena that is always the same under the same conditions.
i.e. force = mass x acceleration |
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Theory.
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A unifying principle that explains a body of facts and/or those laws that are based on them.
i.e. atomic theory, theory of relativity |
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Matter.
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Anything that occupies space and has mass.
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Substance.
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A form of matter that has a definite composition and distinct properties.
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Homogenous mixture.
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Composition of the mixture is the same throughout.
i.e. soft drink, solder |
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Heterogeneous mixture.
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Composition of the mixture is not uniform throughout.
i.e. cement, iron filings in sand |
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Element.
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A substance that cannot be separated into simpler substances by chemical means.
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What kind makeup of matter can be separated into its pure components by physical means?
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Mixtures of matter.
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Compound.
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A substance composed of atoms of two or more elements chemically united in fixed proportions.
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Physical change.
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A change which does not alter the composition or identity of a substance.
Can be changed back to its previous form. |
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Chemical change.
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A change which alters the composition or identity of the substance(s) involved.
Cannot be changed back to its previous state. |
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Extensive property.
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Property of a material dependent upon how much matter is being considered.
i.e. mass, length, volume |
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Intensive property.
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Property of a material independent of how much matter is being considered.
i.e. density, temperature, color |
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SI base unit and symbol for length.
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meter (m)
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SI base unit and symbol for mass.
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gram (g)
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SI base unit and symbol for time.
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second (s)
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SI base unit and symbol for electrical current.
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ampere (A)
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SI base unit and symbol for temperature.
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kelvin (K)
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SI base unit and symbol for amount of a substance.
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mole (mol)
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SI base unit and symbol for luminous intensity.
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candela (cd)
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SI base unit and symbol for volume.
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liter (L)
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Symbol and meaning for "tera-"
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(T) 1,000,000,000,000, or 10^12
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Symbol and meaning for "giga-"
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(G) 1,000,000,000, or 10^9
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Symbol and meaning for "mega-"
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(M) 1,000,000, or 10^6
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Symbol and meaning for "kilo-"
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(k) 1,000, or 10^3
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Symbol and meaning for "deci-"
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(d) 1/10, or 10^-1
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Symbol and meaning for "centi-"
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(c) 1/100, or 10^-2
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Symbol and meaning for "milli-"
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(m) 1/1,000, or 10^-3
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Symbol and meaning for "micro-"
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(µ) 1/1,000,000, or 10^-6
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Symbol and meaning for "nano-"
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(n) 1/1,000,000,000, or 10^-9
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Symbol and meaning for "pico-"
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(p) 1/1,000,000,000,000, or 10^-12
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Formula for conversion between farehneit and celcius.
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°F = (1.8) °C + 32
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Formula for conversion to kelvin.
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°C + 273 = °K (temperature must be in celsius before conversion to kelvin)
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SI derived unit for volume.
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Cubic meter (m³)
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SI derived unit for density.
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Kilograms per cubic meter (kg/m³)
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