For exam 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Chemistry | the science that deals with the materials of the universe and the changes that these materials undergo.
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| 3 steps in scientific method | 1. State the problem and collect data. 2. Formulate hypothesis (possible explanation for the observation) 3. Perform experiments (to test hypothesis)
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| Theory | a set of tested hypotheses that glues an overall explanation of some part of nature.
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| Law | a summary of an observed behavior
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| measurement | a quantive obervation
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| scientific notation | a method for making very large or very small numbers more compact and easier to write.
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| units | tell us what scale or standard is being used to represent the results of the measurement.
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| International System abreviation | SI
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| What unit of measure is used for mass and what is its abreviation? | kilogram / kg
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| What unit of measure is used for length and what is its abreviation? | meter / m
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| What unit of measure is used for time and what is its abreviation? | second / s
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| What unit of measure is used for temperature and what is its abreviation? | kelvin / k
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix mega. | M / 1,000,000 / 10 to the 6
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix kilo. | k / 1000 / 10 to the 3
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix deci. | d / 0.1 / 10 to the -1
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix centi. | c / 0.01 / 10 to the -2
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix milli. | m / 0.001 / 10 to the -3
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix micro. | u / 0.000001 / 10 to the -6
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| Name the symbol, meaning, and scientific notation (power of 10) for the prefix nano. | n / 0.000000001 / 10 to the -9
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| Measurements consist of both a _________ and a __________. | number / unit
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| meter | fundamental SI unit of length
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| volume | amount of 3D space occupied by a substance
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| liter | SI unit of volume
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| mass | the amount of matter inside an object
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| kilogram | SI unit of mass
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| significant figures | the numbers recorded in a measurement
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| key for figuring Kelvin | K = C + 273
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| Celcius to Farenheit | F = 1.8(C) + 32
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| Farenheit to Celcius | C = F - 32/1.8
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| Density | amount of matter present in a given volume of substance.
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| key for density | Density= mass/volume
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| Matter has ______ and occupies ________. | mass / space
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| 3 states of matter | solid, liquid, and gas
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| solid | rigid; has a fixed shape and volume
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| liquid | has a definate volume but takes the shape of its container
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| gas | has no fixed volume or shape; takes the shape and volume of its container
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| physical properties | odor, color, boiling and freezing point, density, volume, and state.
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| chemical properties | refers to a substance's ability to form new substances
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| physical change | involves a change in physical properties but no change in fundamental components. (usually change of state)
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| chemical change | change in fundamental components so it changes into different substances.
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| Element | a substance that cannot be broken down into other substances by chemical methods
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| compound | a substance composed of a given combination of elements that can be broken down into those elements by chemical methods
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| mixture | something that has variable composition
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| pure substance | always has the same composition
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| 2 types of mixtures | homogeneous and heterogeneous
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| homogeneous | a mixture that is the same throughout
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| heterogeneous | contains regions that have different properties from those of oher regions (ex: muddy water)
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| distillation | the method for seperating the components of a liquid mixture that depends on differences in the ease of vaporization of the components. (liquid to gas and back to liquid)
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| filtration | method for seperating the components of a mixture containing a solid and a liquid.
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Created by:
cherishedcheri
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