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Chem 09 Reactions

Terms/symbols related to chemical equations.

mnemonic for 5 evidences of chemical change... do you know what the evidences are??? ECPIG
starting substance ("old") in a chemical change/reaction reactant
substance formed ("new") by a chemical change/reaction product
law of conservation of mass (chemical equation format): mass of reactants _?_ mass of products equals
symbolic representation of a specific chemical change/reaction equation
abbreviation for an element symbol
abbreviation for a compound formula
symbol that, when on left side of the "--->" in a chemical equation, means "reacts with" +
meaning of --> symbol in a chemical equation... there are several but just one is shown here produces
-∆-> symbol in a chemical equation that means "reacts when _?_" heated
--elec--> symbol in a chemical equation means "_?_ reaction" electrolysis
--Pt--> symbol in a chemical equation that means "Pt (or whatever symbol/formula is written there) is a _?_" catalyst
substance that speeds up a chemical reaction without itself being used up catalyst
abbreviation used to show a reactant/product is a solid (s)
abbreviation used to show a reactant/product is dissolved in water (aq)
describes solution formed when a substance is 'dissolved in water' aqueous
describes a substance that can dissolve (in water) soluble
describes a substance that cannot dissolve (in water) insoluble
BrINClHOF or H7 is a mnemonic to remind you of the _?_ elements that always get a subscript of "2" when UNCOMBINED diatomic
describes a chemical equation that satisfies the law of conservation of mass (same # and kinds of atoms on both sides ––––>") balanced
numbers adjusted to balance a chemical equation coefficients
Reaction Type: element + element --> synthesis
Reaction Type: compound --> decomposition
Reaction Type: element + compound --> different element + different compound single replacement
Reaction Type: compound + compound --> different compound + different compound double replacement
Reaction Type: hydrocarbon + oxgen --> carbon dioxide + water combustion
The two products of the complete combustion of a hydrocarbon are always carbon dioxide and _?_ water
Describes any chemical change/reaction that PRODUCES energy exothermic
Describes any chemical change/reaction that ABSORBS energy endothermic
Metal elements arranged in order of decreasing reactivity form and _?_ series activity
Most chemically reactive halogen fluorine
Gas released when a reactive metal is placed in water (or if some less active metals are placed in hot water/steam) hydrogen
of the 5 reaction types, the one which always requires an addition of energy in some form (always endothermic) decomposition
group of organic molecules of which methane is a member and having the general formula CxH2x+2 alkanes
the first move in balancing a combustion reactions is to move the subscript of _?_ on the left over as the coefficient of that same element on the right hydrogen
abbreviation used to show a reactant/product is a liquid (l)
abbreviation used to show a reactant/product is a gas (g)
Created by: goakley



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