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31 Cards in this Set
- Front
- Back
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What is Endothermic?
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A chemical reaction that absorbs heat.
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What is Acid?
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Any compound that gives up protons or accepts electrons during a chemical reaction or release H ions when dissolved in Water.
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What is Atomic Number?
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The number of protons in the nucleus of an atom.
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What is Base?
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Any compound that gives up electrons or accepts protons during a chemical reaction or accept H ions when dissolved in Water.
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What is a Buffer?
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A substance that acts to minimize changes in the pH of that solution when acid or base is added
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What is a Catalyst?
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Any substance that increase the rate of a chemical reaction without going undergoing any permanent change.
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What is a Cation?
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A positively charged ion.
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What are Chemical Bonds?
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An attractive force binding two atoms together
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What are the types of Chemical Bond?
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Covalent bonds, Ionic bonds, Hydrogen bond
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What is a Covalent Bond?
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When two atoms share 1 or more pairs od electrons.
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What is a Monomer?
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A small molecule that can covalently bind to other similar molecule to from a larger macromolecule
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What is Electronegativity?
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A measure of the ability of an atom to attract electrons towards itself from an atom to which it is bonded
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What is Energy?
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The ability to do work or to supply heat
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What is Exothermic?
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A chemical reaction that give of heat
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What is an Hypothesis?
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A proposed explanation for a set of observation
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What is an Anion?
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A negatively charged ion
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What is an Ion?
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An atom or molecule that has lost or gained an electron
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What is a Ionic Bond?
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When an electron is completely transferred from one atom to another so that the atom remain associated due to their opposite charges
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What is a Isotopes?
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An element that have the same number of protons but differ in the number of neutrons
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What is a Hydrogen Bond?
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A weak interaction between two molecules; Attraction between a H atom with a partial (+) charge and another Atom (usually O or N) with a partial ( - ) charge
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What is an Orbital?
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The spherical region around an atomic nucleus in which an electron is present most of the time
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What is Photosynthesis?
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The process that converts the energy of light into chemical energy stored in glucose
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What is Polymer?
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Any long molecule composed of small repeating units (monomers) bonded together
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What is an Polar Molecule?
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Having partial positive and partial negative charges
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What is a Proton?
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An elementary atomic particle with a positive charge
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What is a Theory?
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A propose explanation for a broad class of observation
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What is Matter?
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It occupies space and has mass
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What is Dehydration Synthesis?
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A chemical reaction that builds up molecules by losing water molecules.
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What is an Electron?
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a stable atomic particle that has a negative charge
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What is Atomic mass?
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The mass of an atom relative to other atoms
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What is the 1st Law of thermodynamic?
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The internal energy in a system isolated from other systems remains constant
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