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46 Cards in this Set
- Front
- Back
- 3rd side (hint)
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pure substance
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substances made up of only ONE type of ATOM or MOLECULE
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homogeneous mixture
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uniform in composition
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heterogeneous mixture
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mixture with a NON UNIFORM composition
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WHMIS
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Workplace hazardous materials information system
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physical property
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can be observed/ measured without forming a new substance.
Often classified as qualitative or QUANTITATIVE |
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chemical property
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describes how substance REACTS with other substances when forming a NEW substance
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qualitative
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generalized info about an item which includes DESCRIPTIVE items
(senses: see, smell, hear) |
SENSES
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quantitative
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measures INFO about an item
(NUMBERS) (density, solubility, boiling temp) |
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physical Change
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when a substance changes FORM but not CHEMICAL COMPOSITION
(no new substances are formed) (melting, evaporating, dissolving) |
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chemical change
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one or more new substances are formed with DIFFERENT CHEMICAL PROPERTIES
(YOU CANNOT REVERSE THIS) |
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element
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a pure substance made up of ONE type of particle
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compound
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pure substance made up of 2 or more elements CHEMICALLY COMBINES TOGETHER
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electron
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stable particle with a charge or negative electricity, found in all atoms
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proton
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a stable particle occurring in all atomic nuclei (with electric charge)
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neutron
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particle with the same mass as a proton but WIHOUT electric charge
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nucleus
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central and most important part of an object, movement or growth
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metals
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solid materials, (hard and shiny)
on the left side of the staircase |
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non metals
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an element or substance that is not a metal
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metalloids
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element whose properties are between metals and solid nonmetals
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alkali metals
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reactive, electro positive metals on the first group of the table
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alkaline earth metaks
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reactive electropositive metals that react with water to form in soluble hydroxides
on the second group of the table |
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halogens
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reactive
non metallic elements that form highly acidic compounds with hydrogen |
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Nobel gasses
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make up a group of chemical elements with similar properties
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atomic number
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The NUMBER OF PROTONS in the nucleus of the atom.
determines chemical properties of elements and its place in the periodic table. |
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atomic mass
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The MASS of an atom of the chemical element expressed in atomic mass units
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GROUP
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vertical column that contains elements having the same number of electrons
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mass number
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total number of protons and neutrons in a nucleus
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period
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HORIZONTAL row of he periodic table
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CONDUCTIVITY
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If a solution conducts electricity
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reactant
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the substance that reacts in a chemical reaction
BEFORE REACTION |
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products
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substances produced during a chemical reaction
(everything after the reaction) |
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exothermic
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when HEAT is released during a chemical reaction
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endothermic
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when HEAt is ABSORBED from the environment in a chemical reaction
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reaction rate
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the speed of a reaction
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catalyst
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chemical that SPEEDS UP a reaction
(without being affected itself) |
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enzyme
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a biological catalyst
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inhibitor
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chemical that SLOWS DOWN the rate of reactions
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corrosion
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reaction of a material with OXYGEN to produce oxidized material
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molecular
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non metal and non metal
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ionic
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METAL and NON metal
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emulsions
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substances that just don't mix
(oil and water) |
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mechanical mixtures
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mixtures you can seperate
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homogeneous
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one pure substance
(distilled water, blood) |
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heterogeneous
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TWO or more substances
(solute and solvent) (kool aid, lake water) |
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malleability
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can be hammered into thin sheets
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ductility
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STRETCHED
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