CHEM 177-Test One
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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| Composition | the kinds of atoms the matter contains
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| Atoms | the almost infinitesimally small building blocks of matter
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| Property | any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types
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| Matter | the physical material of the universe; it is anything that has mass and occupies space
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| States of Matter | -Solid
-Liquid
-Gas
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| Molecules | two or more atoms are joined together in specific shapes
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| Structure | the arrangement of atoms
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| Solid | has both definite shape and a definite volume
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| Liquid | has a distinct volume independent of its container but has not specific shape
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| Gas/Vapor | no fixed volume or shape
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| Mixtures | combinations of two or more substances in which each substance retains its own chemical identity
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| Compounds | substances composed of two or more elements
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| Pure Substance | is matter that has distinct properties and a composition that does not vary from sample to sample
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| Physical Properties | can be observed without changing the identity and composition of the substance
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| Law of Constant Composition/Definite Proportions | the observation that the elemental composition of a pure compound is always the same
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| Solutions | a mixture of substances that has a uniform composition; a homogeneous mixture
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| Elements | a substance that cannot be separated into simpler substances by chemical means
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| Chemical Properties | describe the way a substance may change, or react, to form other substances
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| Physical Change | changes that occur with no change in chemical composition
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| Extensive Properties | a property that depends on the amount of material considered; for example, mass or volume
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| Intensive Properties | a property that is independent of the amount of material considered; for example, density
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| Changes of State | transformations of matter from one state to a different one, for example, from a gas to a liquid
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| Chemical Change/Chemical Reaction | processes in which one or more substances are converted into other substances
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| C | Carbon
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| F | Fluorine
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| H | Hydrogen
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| I | Iodine
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| N | Nitrogen
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| O | Oxygen
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| P | Phosphorus
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| S | Sulfur
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| Al | Aluminum
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| Br | Bromine
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| Ca | Calcium
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| Cl | Chlorine
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| He | Helium
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| Li | Lithium
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| Mg | Magnesium
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| Si | Silicon
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| Cu | Copper
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| Fe | Iron
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| Pb | Lead
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| Hg | Mercury
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| K | Potassium
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| Ag | Silver
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| Na | Sodium
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| Sn | Tin
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| Significant Figures | the digits that indicate the precision with which a measurement is made; all digits of a measured quantity are significant, including the last digit, which is uncertain
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| Precision | the closeness of agreement among several measurements of the same quantity; the reproducibility of a measurement
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| Metric System | a system of measurement used in science and in most countries. The meter and the gram are example of metric units
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| Mass | a measure of the amount of material in an object. It measures the resistance of an object to be moved. In SI units, mass is measured in kilograms
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| Kelvin Scale | the absolute temperature scale; the SI unit for temperature is the Kelvin. Zero on the Kelvin scale corresponds to -273.15 C; therefore, K = C + 273.15
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| Accuracy | a measure of how closely individual measurements agree with the correct value
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| SI Units | the preferred metric units for use in science
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| Celsius Scale | a temperature scale on which water freezes at 0 degrees and boils at 100 degrees at sea level
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| Density | the ratio of an object's mass to its volume
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| Dimensional Analysis | a method of problem solving in which units are carried through all calculations. Dimensional analysis ensures that the final answer of a calculation has the desired units
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| Conversion Factor | a ratio relating the same quantity in two systems of units that is used to convert the units of measurement
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
kmhyden
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