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chem 1010 Chapter 4 pre-quizzes material with complete verified solutions
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A______________ represents both the identities and the relative quantities of substances undergoing a chemical change. chemical equation The reaction between methane and oxygen yields. carbon dioxide and water Substances undergoing reaction are called _____________, while the substa...

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  • September 2, 2024
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chem 1010: Chapter 4
pre-quizzes material
with complete verified
solutions(GUARANTEE
D SUCCESS)
A______________ represents both the identities and the relative quantities of
substances undergoing a chemical change. - answer chemical equation


The reaction between methane and oxygen yields. - answer carbon dioxide
and water


Substances undergoing reaction are called _____________, while the
substances produced in the reaction are called _____________. - answer
reactants, products


The relative numbers of reactant and product species are represented
by_______________. - answer coefficients


Coefficients for a chemical reaction are usually represented as the
smallest set of____________. - answer whole-numbers ratios


Methane and oxygen react to yield carbon dioxide and water in a
___________________. - answer 1:2:1:2 ratio

, A balanced chemical equation means that_______________ of atoms for each
element involved in the reaction are represented on the reactant and
product sides. - answer equal numbers


________________ define the identity of the substance, while ______________
define the stoichiometric ratios of substances. - answer Formula
subscripts, coefficients


To balance a chemical equation, _______________ are added stepwise before
reactants and products to ensure that the number of atoms of each
element are the same on both the reactant and product side. - answer
coefficients


Sometimes fractions are used as intermediate coefficients. Subsequently
the entire equation is multiplied by a(n) ______________ to convert the
fractional coefficients to integers without upsetting the atom balance. -
answer whole number


Match the physical states of reactants and products in chemical equations
with the parenthetical abbreviations - answer solid: (s)
liquid: (l)
gas: (g)
aqueous solution: (aq)


A balanced equation where the reactants and products are given as
formulas or is called a_______________ equation. - answer molecular


A________________ equation explicitly represents each of the dissolved ions
that result from dissociation of the ionic compounds. - answer complete
ionic


________________ are present on both the reactant and product side of a
chemical equation and are not changed in the course of the reaction. -
answer Spectator ions

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