Chem 3 FINAL ch7

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if you had an aqueous mixture that contained Ag+, K=, and PB+2 cations, how many different solids could precipitate if a chloride solution was added ?

2

all of the following compounds are soluble in water Except ?

PbCl2

which of the following is NOT a sign of a chemical reaction ?

all of the above

which of the following compounds is INSOLUBLE ?

aluminum sulfide magnesium phosphate

when water is heated ,bubbles form in the water. Is this evidence of a chemical reaction? whY?

no, boiling water is a physical change

which of the following compounds are SOLUBLE

potassium carbonate aluminum sulfate

A reaction which forms a solid product is an example of a __

precipitation reaction

before a chemical equation can be written, one must know what ?

the symbols and formulas of all reactants and products

An aqueous solution is what ?

water with another compound dissolved in it

which of the following statements about balancing reactions is FALSE?

when coefficients are added the type of compounds is changed in the chemical reaction

which of the following is NOT evidence that a chemical reaction has occurred ?

(color change, solid formation, gas and emission of light) all of the above

a reaction which forms a gaseous product is an example of a __

gas evolution reaction


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