Term
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Definition
| the simplest type of matter with unique physical and chemical properties |
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Definition
| matter whose composition is fixed |
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Definition
| an independent structure consisting of two or more atoms chemically bound together |
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Definition
| type of matter composed of two or more different elements that are chemically bound together |
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Definition
| a group of two or more substances (elements and/or compounds) that are physically intermingled |
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Definition
| the total mass of substances does not change during a chemical reaction |
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| Law of definite (or constant) compostion |
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Definition
| no matter what its source, a particular compound is composed of the same elements in the same parts (fractions) by mass |
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| faction by mass (mass fraction) |
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Definition
| part of the compound's mass that each element contributes; it is obtained by dividing the mass of each element by the total mass of compound |
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Term
| percent by mass (mass percent) |
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Definition
| fraction by mass expressed as a percentage |
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| law of multiple proportions |
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Definition
| if elements A and B react to form two compounds, the different masses of B that combine with a fixed mass of A can be expressed as a ratio of small whole numbers |
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| Who created the atomic theory? |
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Definition
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Definition
| tiny indivisible particles of an element that cannot be created or destroyed |
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| Who came up with the the law of conservation of mass? |
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Definition
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Definition
| called so because they rays originated at the negative electrode and moved to the positive electrode |
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Who discovered the electron?
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Definition
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Term
| Who created the oil-drop experiment for measuring an electron's charge? |
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Definition
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Definition
| contains all the positive charge and essentially all the mass of the atom |
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| Who proposed of the nucleus? |
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Definition
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Term
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Definition
| atoms that have different numbers of neutrons and therefore different mass numbers |
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Definition
| transferring electrons from the atoms of one element to those of another form these |
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Definition
| from when a pair of electrons are mutually attracted by the two nuclei |
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Term
| Who created a glass tube with metal electrodes to witness the behavior of cathode rays? |
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Definition
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Term
| Who discovered the neutron? |
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Definition
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Term
| Name the 7 famous diatomic molecules |
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Definition
| O2, Cl2, Br2, I2, F2, N2, H2 |
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Term
| What only has carbons and hydrogen in it? |
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Definition
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Term
| Name the first ten alkanes |
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Definition
| Methane, Ethane, Propane, Butane, Pentane, Hexane, Heptane, Octane, Nonane, Decane |
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Term
| What do acids form in water? |
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Definition
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Term
| Name the three types of aqueous ionic reactions |
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Definition
Precipitations reactions
neutralization reactions
reactions that form gaseous products |
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Term
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Definition
| shows all the soluble ionic substances dissociated into ions |
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Definition
| not involved in the chemical change |
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Term
| what do bases produce in water? |
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