Chemistry 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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| Particles that constitute the fundemental building blocks of matter. | Atoms
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| Two or more joined atoms arranged specifically. | Molecule
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| The science that seeks to understand the behavior of matter by studying atoms and molecules. | Chemistry
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| Have a fixed volume and shape | solid
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| A fixed volume that takes the shape of the container | liquid
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| Expands to occupy volume, compressable. | Gas
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| The kinds or amounts of substances that make up matter. | Composition
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| Composed of 1 single type of atom or molecule | Pure Substance
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| Substances that cannot be further broken down. | Element
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| Substances that are composed of two or more elements. | Compound
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| More than 1 atom or molecule type. | Mixture
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| Mixtture where the composition varies from region to region. | Heterogeneous Mixture
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| Mixture with the same component throughout | Homogeneous
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| Alters the state or appearence | Physical Change
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| The original sunstance transforms into something else. | Chemical change
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| Property of a material that is displayed without changing the composition. | Physical Property
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| Property that is displayed only by undergoing a phyical change. | Chemical Property
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| How close a series of measurments are to each other. | Precision
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| How close to the TRUE value measurments are. | Accuracy
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| Has an equal probability of being to high and to low, if enough measurments are taken it will eventually even out. | Random Error
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| Will consistently measure to high or to low. | Systematic Error
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| How much matter makes up an object. | mass
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| A tool used to convert one type of unit to another. | Dimensinal Analysis
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| Fractional quantity with the units we are converting from what we are converting to. | Conversion Factor
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| A characteristic that is dependent of the amount of the substance | Intensive Property
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| Dependant on the amount | Extensive property
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| In a chemical reaction, mass is neither created nor destroyed. -Antwoine Lauoisier | Law of Conservation of Mass
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| Things will come together in whole number ratios. | Law of Multiple Proportions.
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| Negatively charged, low mass particle. | Electron
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| The number of protons in an element. | Atomic Number (Z)
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| Unique 1 or 2 letter designated for each element. | Chemical Symbol
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| Atoms with the same number of protons, but different number of electrons | isotopes
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| The sum of the number of protons and neutrons an element has. | Mass number (A)
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| Positively charged ion. | Cation
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| Negatively Charged ion. | Anion
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| When elements are arranged in order of mass, certain sets of properties recur. | Periodic Law
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| Found in the lower and middle side of the periodic chart. Good conductors, shiney, ductile, malleable, lose electrons. | Metals
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| Found on the upper right portion of the periodic chart. Poor conductors, gain electrons in chemical changes. | Non-metals
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| Found between the metals and non-metals on the periodic chart. Semi-conductors. | Metalloids
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| Alkali, lose 1 electron | Group 1A
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| Alkaline earth metal, lose 2 electrons | Group 2A
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| Starts with oxygen, Gain 2 electrons | Group 6A
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| Halogens, Gain 1 electron | Group 7A
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| Variable, conform with multiple chargs | Transition Metals
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| E(fractional % of isotope)(mass of isotope) | Atomic Mass Formula
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| Amount of material the contains avagadro's number of particles. | The Mole
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| Avagadro's Number | 6.0221 * 10^23
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