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24 Cards in this Set
- Front
- Back
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Proof of a chemical reaction
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1 or more of these: a solid seperates from a liquid, a gas is produced, a permanant color change, temperature change, light or sound is produced.
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This represents the chemical composition of a substance...
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Chemical Formula
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This represents the changes that take place in substances as they react...
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Chemical Equation
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These numbers below the line tell how many of each kind of atom is present...
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subscripts
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This number tells how many electrons an element is likely to gain, lose, or share...
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Oxidation
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Alkali metal atoms (Group 1A) have an oxidation number of...
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+1
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Alkaline-earth metals (Group IIA) have an oxidation number of...
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+2
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Halogens (Group 17) have an oxidation number of...
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-1
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Oxygen family elements (group 16) have an oxidation number of...
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-2
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Transition metals usually have an oxidation number of...
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+1 or +2
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The sum of the oxidation number in any formula must be...
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zero
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When writing a formula, which element goes first?
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The less electronegative one-the one farther to the left or farther down on the periodic chart
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In a correctly written formula, the subscript times the ___________ of each element added together will equal zero.
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oxidation number
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Ions composed of two or more atoms that are covalently bonded and act as a single particle...
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Polyatomic Ions
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A polyatomic ion must always be in _____________ when it has a subscript.
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Parentheses
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A compound with only two elements...
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Binary compound
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In a binary compound, the first name of the compound is the name of the...
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element with the positive oxidation number.
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In a binary compound, the last name is the name of the...
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element with the negative oxidation number with an -ide ending.
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To name a binary compound made of two nonmetals, use...
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prefixes.
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The prefixes for 1 through 6 are...
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mono (don't use with first element),di, tri, tetra, penta,hexa
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To name a compound with a polyatomic ion in it...
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write the name of the cation (positive ion) with no prefixes and the name of the anion with, if it is a single element, and ide ending, or, if it is a polyatomic ion, with the ions name with no ending.
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Nitrogen has two oxidation numbers that are...
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-3 and +5
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What is the common name for Iron Oxide?
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Rust
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Noble gases have oxidation numbers of...
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Zero
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