Term
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Definition
| Material Safety Data Sheet |
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Term
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Definition
| Workplace Hazardous Materials Information System |
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Term
3 ways in which WHMIS informs workers about chemicals |
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Definition
1. Controlled products must have information labels in both English and French 2. Controlled products must have an MSDS 3. Workers who handle chemicals must complete an education program provided by their employer |
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Term
| Matter is subdivided into these two catagories |
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Definition
| Mixtures and Pure Substances |
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Term
| The two types of mixtures |
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Definition
| Heterogeneous mixtures (mechanical mixture) and Homogeneous mixtures (solution) |
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Term
| The two types of pure substances |
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Definition
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Term
| Type of mixture in which the different components of the mixture are visible |
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Definition
| Heterogeneous mixture (mechanical mixture) |
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Term
| Type of pure substance that cannot be chemically broken down into simpler substances |
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Definition
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Term
| Type of mixture in which the different components of the mixture are not visible |
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Definition
| Homogeneous mixture (solution) |
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Term
| Type of pure substance made up of two or more elements that are chemically combined |
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Definition
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Term
| Scientist who made the first model of the atom (nicknamed the billiard ball model) |
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Definition
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Term
| The five points of Dalton's atomic theory |
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Definition
1. All matter is made up of small particles called atoms. 2. Atoms cannot be created, destroyed, or divided into smaller parts. 3. All atoms of the same element are identical in mass and size, but they are different in mass and size from atoms of other elements. 4. Compounds are formed when atoms of different elements combine in fixed proportions. The tiniest particles of any compound always contain the same types and relative numbers of atoms. 5. Chemical reactions change the way atoms are grouped, but the atoms themselves are not changed in the reactions. |
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Definition
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Definition
| flamable and combustable material |
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Term
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Definition
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Term
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Definition
| poisonous and infectious material causing immediate and serious toxic effects |
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Term
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Definition
| poisonous and infectious material causing other toxic effects |
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Term
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Definition
| biohazardous infectious material |
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Definition
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Term
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Definition
| dangerously reactive material |
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Term
| Scientist credited with discovering the electron |
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Definition
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Term
This model of the atom is a sphere of positive fluid with negative electrons embedded in it (nicknamed the plum pudding model) |
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Definition
| Thomsons model of the atom |
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Term
| This scientist shot a stream of alpha particles at a thin gold foil and observed the deflection of the alpha particles. |
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Definition
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Term
| The three main features of Rutherford's model of the atom |
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Definition
1. A nucleus which contains all the positive charge, most of the mass, and is extremely small. 2. Electrons that orbit the nucleus. 3. Empty space - the vast majority of the atom is empty space. |
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Term
| The nickname for the Rutherford model of the atom |
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Definition
| the solar-system atomic model |
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Term
| elements that differ in mass but are chemically alike (have the same number of protons and electrons) |
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Definition
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Term
| Scientist who discovered the neutron |
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Definition
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Term
| Scientist who added energy levels to Rutherford's model of the atom |
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Definition
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Term
| The term for the number of protons in the nucleus of an atom. |
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Definition
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Term
| The term for any subatomic particle residing in the nucleus. |
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Definition
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Term
| The term for the total number of protons and neutrons in the nucleus. |
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Definition
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Term
| Way in which to calculate the number of neutrons in a nucleus. |
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Definition
| mass number - atomic number |
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Term
| Term for the horizontal rows on the periodic table |
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Definition
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Term
| Vertical columns on the periodic table |
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Definition
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Term
Family in column 1 on the periodic table |
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Definition
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Term
| Family in column 2 on the periodic table |
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Definition
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Term
| Family in column 17 on the periodic table |
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Definition
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Term
| Family in column 18 on the periodic table |
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Definition
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Term
| Found to the left of the staircase line on the periodic table |
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Definition
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Term
| Found to the right of the staircase line on the periodic table |
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Definition
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Term
| Touching the staircase line on the periodic table |
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Definition
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Term
| The only metal not a solid at room temperature |
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Definition
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Term
| good conductors of heat and electricity |
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Definition
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Term
| poor conductors of heat and electricity |
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Definition
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Term
| Term for the outermost occupied energy level of an atom |
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Definition
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Term
| Term for electrons in the outermost energy level of an atom |
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Definition
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Term
| The period number that an element is in represents |
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Definition
| the number of occupied energy levels |
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Term
| The group number (using the "A" system) represent |
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Definition
| the number of electrons in the outermost energy level |
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Term
| Form when an atom either gains or losses electrons |
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Definition
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Term
| A diagram that shows the symbol of the element and the number of electrons (represented by dots) in the outermost shell |
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Definition
| Lewis dot diagrams or electron dot diagrams |
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Term
| Term for a positively charged atom |
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Definition
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Term
| Term for a negatively charged atom |
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Definition
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Term
| Negatively charged ions will ______ electrons |
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Definition
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Term
| Positively charged atoms will _______ electrons |
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Definition
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Term
| Non-metals tend to form these kinds of ions |
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Definition
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Term
| Metals tend to form these kinds of ions |
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Definition
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Term
Ionic compounds are made up of |
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Definition
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Term
| Ionic compounds have these types of bonds |
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Definition
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Term
| Ionic bonds involve electron _____ |
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Definition
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Term
| Molecular compounds are made up of |
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Definition
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Term
Type of bond in molecular compounds |
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Definition
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Term
| Covalent bonds involve electron _______ |
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Definition
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Term
| The type of compound in which the charges MUST add up to zero |
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Definition
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Term
| When found by themselves these elements always come in pairs (they are diatomic) |
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Definition
all of the "gens" oxygen, nitrogen, hydrogen, and the halogens |
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Term
| Type of compound that forms a crystal lattice |
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Definition
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Term
| Type of compound that forms molecules |
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Definition
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