Matter/Atoms
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| Atom - | the smallest unit of an element that maintains the chemical properties of that element; basic building block of matter
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| Boiling Point - | temperature at which a liquid changes to a gas at a given pressure
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| Conservation- | to have change in a chemical reaction but no net gain or loss of molecules
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| Chromatography- | a method of separating a mixture made of color into the primary colors which made it
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| Decomposition- | a type of reaction in which the complex reactant breaks down into simpler products
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| Ductility - | the ability to be formed or pulled into a wire or tube
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| Electron- | the tiny negatively charged particle found in the cloud of the atom
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| Element - | a substance that cannot be separated or broken down into simpler substances by chemical means; all the same of type atoms
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| Endothermic - | during a chemical reaction energy is absorbed by the molecules of the products.
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| Exothermic – | during a chemical reaction energy is released
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| Heat - | the energy transferred between objects that are at different temperatures
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| Ion- | an atom or group of atoms that has a positive or negative electric charge from losing or gaining one or more electrons; occurs during bonding
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| Indicator- | an organic compound used to indicate the presence of a chemical. It changes color to indicate the presence of____ Ex. Hydrion paper tells if acid or base, iodine if a starch is present, phenol red if CO2 is present.
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| Mass - | amount of matter contained in a substance
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| Matter - | anything that has mass and volume
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| Melting Point - | the temperature and pressure at which a solid becomes a liquid
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| Malleability - | able to be bended, shaped, or flattened or hammered flat
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| Motion - | an object's change in position relative to a reference point
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| Neutron- | the neutral particle of an atom-found in the nucleus.
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| Particles - | a very small piece or part; a tiny portion or speck.
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| Phase - | one of the four states or conditions in which a substance can exist: solid, liquid, gas, or plasma.
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| Proton- | the positive particle of an atom found in the nucleus. Makes the element unique.
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| Pure Substance - | a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
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| Saturation - | a solution that cannot dissolve any more solute under the given conditions
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| Solubility - | the solubility to dissolve in another substance
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| Solute - | in a solution, the substance that dissolves in the solvent
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| Solvent - | in a solution, the substance in which the solute dissolves
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| Solution- | a homogenous mixture in which a solute dissolves in a solvent
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| Synthesis- | a chemical reaction in which simple reactants combine to form a more complex product(compound)
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| Volume - | amount of space an object occupies
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| Mass - | a measure of the amount of matter in an object
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| Crystal Pattern - | a solid in which all the atoms are arranged in a regular, repeating pattern.
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| Evaporation - | process in which liquid water changes to water vapor with the addition of energy.
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| Filtering - | a porous material through which a substance is passed in order to separate the fluid from suspended particulate matter.
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| Heterogeneous - | a mixture that is not mixed evenly and each component retains its own properties
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| Sifting - | to separate and retain the coarse parts to remove lumps and large particles
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| Conductivity - | property of metal and alloys that allow heat or electricity charges to pass through the material easily.
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| Metals - | an element below and to the left of the stair-step line of metalloids; about 80% of the known elements are metals; metals are shiny, good conductors, low specific heat, high melting points, malleable, and ductile.
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| Model - | a standard or example used for comparison.
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| Periodic Table - | an arrangement of elements in order of increasing atomic numbers that demonstrates the periodic patterns that occur among the elements.
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| Physical Properties - | a characteristic of a substance that can be observed without changing the identity of the substance
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| Reactivity - | the ability of an atom or molecule to undergo a chemical reaction with another atom, molecule or compound.
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| Chemical bond - | the "glue" that attracts and keeps atoms held together due to sharing of each atom's electrons
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| Chemical change - | the process in which one or more substances are changed into one or more new substances
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| Chemical property - | property that can be observed only when a substance is changed into a new substance
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| Precipitate - | the solid that is formed as a result of a precipitation reaction
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| Closed System - | the reactants and products in the reaction that are contained to reduce error
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| Law of Conservation of Mass - | states that the total amount of mass and energy in the universe is conserved (does not change)
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| Products - | materials present at the end of a reaction
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| Reactants - | the starting materials in a reaction
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| Homogenous - | solid, liquid or gas that contains two or more substances blended evenly throughout.
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| Mixtures - | the physical combination of 2 or more substances; can be separated by physical means.
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| Molecule - | consisting of one or more atoms held together by chemical forces; formed by bonding
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| Compound - | a substance made of two or more different atoms
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| Density - | the measure of mass of a substance per unit volume
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Created by:
Saba Aleem
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