Define the Mole

• the SI base unit to measure the amount of a substance.

• the SI base unit to measure the amount of Atoms only.

• the Unit to measure Mass.

• the unit to measure Moles

why chemists use the mole

• because it is easy way to measure the Reactants Mass.

• knowing how many representative particles are in a sample.

• It allow Chemists to know the chemical formula

• It allow chemists to know the substance

State the Relationship between Avogadro number and one mole

Hint: It is equal to what ?

Describe, using particulate diagrams, different types of representative particles

ORDER THEM

• atoms , ions , molecules and formula units

• atoms , ions , formula unit and molecules

• ions , atoms , molecules and formula units

• ions , atoms , formula units and molecules

List the conversion factors used to convert between particles and moles

choose all correct choices

Find Representative Particles in 1.00 mol

in Copper ( CU ) and Nitrogen gas (N2)

• Xe is larger

• Ne is larger

Define molar mass

• is the mass in grams of one mole of any pure substance

• is the mass in grams of 6.00 moles of any pure substance

• is the mass in grams of every 12 moles of any pure substance

• is the mass in grams of Pure substance , it depends on the question