Mole Concept

The molecule CH2CHCH3CH2CHF(CH3)2CCH3 contains ___ H atoms

• 16

• 18

• 20

• 22

Which of the following statements regarding the mole is incorrect?

• A mole is a counting unit equal to 6.02 x 1023 particles.

• The number of particles in a mole is known as Avogadro’s number.

• A mole of particles of an element is numerically equal to the atomic mass of the element.

• none of the above

A representative particle of silicon dioxide is

• a grain of sand

• an atom of silicon

• a molecule of SiO₃

• a molecule of SiO₂

There are _____ chocolate chips in five dozen chocolate chips

• 5

• 30

• 50

• 60

The _____ is the SI unit for the amount of a substance.

• milligram

• milliliter

• mole

• micron

TRUE or FALSE: The representative particle of an ionic compound is the formula unit.

• TRUE

• FALSE

One "mole" in chemistry represents the number:

• 2.06 x 10²³

• 6.02 x 10²³

• 0.62 x 10²³

• 10.23 x 6²

A mole of Neon contains

6.02 x 10²³ _____.

• atoms

• ions

• formula units

• molecules

A mole of potassium chloride, an ionic compound, contains 6.02 x 10²³ _____.

• atoms

• ions

• formula units

• molecules

The following are representative particles of matter. Which among them represents the covalent bond?

• atom

• ions

• formula unit

• molecule