Chemical Quantities Review

A mole can be compared to quantities such as a dozen because

• A mole is a quantity of atoms or molecules to make counting them easier to understand similar to a dozen is a grouping of 12

• A mole and a dozen both relate to a unit of 12

• A mole and a dozen both are equivalent to 6.02x10^23

• A mole and a dozen are both quantities that measure the mass of an object

True or False - A mole is used to simplify the counting of atoms

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NGSS.HS-PS1-7

True or False - The number of representative particles in a mole (6.02 × 10^23) is called Avogadro’s number.

The number of particles in one mole of a substance is

• avogadro's number (6.02x10^23)

• the molar mass

• 1 billion

• unknown

What is PPM?

• Percentage Per Million

• Parts Per Mile

• Parts Per Million

• Parts Per Thousand

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NGSS.HS-ESS3-5

• 23

• 35.5

• 58.5

• 60

In a chemical reaction, 2 moles of hydrogen gas react with 1 mole of oxygen gas to form water. What is the stoichiometric coefficient of water in the balanced chemical equation?

• 1

• 2

• 3

• 4

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NGSS.HS-PS1-7

The periodic table of elements lists the molar mass of silver to be 107.87g/mol. How much does 1 mole of silve weigh?

• 47 g

• 107.87 g

• 100 g

• 60 g

The periodic table of elements lists the molar mass of calcium to be 40.078g/mol. How much does 1 mole of calcium weigh?

• 40.078 g

• 20 g

• 2 g

• 100 g

Which of the following is the same about 1 mole of hydrogen and 1 mole oxygen?

• They both have the same number of atoms.

• They both occupy the same amount of space.

• They both have the same mass.

• They both have the same chemical properties.

Tags

NGSS.HS-PS1-7