Chemistry Concepts and Calculations Quiz

Use particulate models and mathematical representations to model the number of moles in a substance (CH.4 a)

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Tags

NGSS.HS-PS1-7

Understand the significance of Avogadro’s number and relate Avogadro’s number to the mole (CH.4 a) convert among mass, volume, and moles of a substance (CH.4 a)

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Convert among mass, volume, and moles of a substance (CH.4 a)

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Stoichiometry involves quantitative relationships in a balanced equation, which are based on mole ratios (CH.4 b).

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Tags

NGSS.HS-PS1-7

When two elements combine to form two or more compounds, the ratios of the masses of one element that combines with the fixed mass of the other are simple whole numbers (law of multiple proportions) (CH.4 b).

Expalin how you use the above information to predict your compounds?

Tags

NGSS.HS-PS1-7

Empirical and molecular formulas are used to show the chemical composition of a compound. These are useful in determining the formula of a substance based on the mass of the elements of an unknown substance (CH.4 b).

Although matter is conserved, chemical reactions rarely convert all the reactions to products. Percent yield can be used to determine the efficiency of a reaction as well as the percent error (CH.4 b).

Determine the empirical and molecular formulas of a compound, given masses of elements that compose it (CH.4 b)

Conservation of matter is represented in balanced chemical equations. A coefficient indicates the relative number of particles involved in the reaction (CH.3).

Tags

NGSS.HS-PS1-7

Chemical formulas are used to represent compounds. Subscripts represent the relative number of each type of atom in a molecule or formula unit (CH.3 a).

Tags

NGSS.MS-PS1-1