PS Ch 7 Review Flashcards

Front

The substances that undergo change in a chemical reaction are called

Back

reactants

Front

Products of the reaction: AgNO₃ + NaCl

Back

AgCl and NaNO₃

Front

What does the ARROW in a chemical equation mean?

Back

forms, yields, produces

Front

Which of the following is a balanced chemical equation for the synthesis of NaBr from Na and Br₂?
Options: Na + Br₂ --> NaBr, 2Na + Br₂ --> NaBr, Na + Br₂ --> 2NaBr, 2Na + Br₂ --> 2NaBr

Back

2Na + Br₂ --> 2NaBr

Front

The coefficients in a balanced chemical equation always express the ratio of: moles of reactants and products, volume of reactants and products, atoms of reactants and products, mass of reactants and products

Back

moles of reactants and products

Front

A _____ is the number that appears before a formula in a chemical equation.

Back

coefficient

Front

A _____ is a representation of a chemical reaction in which the reactants and products are expressed as formulas.

Back

chemical equation

Front

A _____ is an amount of a substance that contains approximately 6.02 x 10²³ particles of that substance.

Back

mole, mol

Front

How many atoms are present in 3 moles of silicon?

Back

3 x (6.02 x 10²³) atoms

Front

The molar mass of carbon is ______ g.

Back

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