Chem 09 Reactions Word Scramble
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Term | Definition |
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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