Moles & Molar Mass

Atoms and Moles:

• An atom is the smallest part of an element that retains its properties.
• Atoms are the fundamental units in chemistry, making up molecules and compounds.
• Molecules and compounds react to form new substances.
• Atoms consist of:

• A mole: is a scientific unit that represents 6.022×10²³ particles (Avogadro’s number) of a substance, correlating its amount to its mass in grams.
• Molar Mass: is the mass of one mole of a substance, measured in grams per mole (g/mol).

Dimensional Analysis in Chemistry

Questions

1. 

2. 

3. 

Answers:  1. D, 2. C, 3. C.