Molecular weight

The video tutorial explains the concept of molecular weight, which is usually expressed in atomic mass units. It highlights the difference in molecular weight between small molecules, such as hydrogen (H2), and large organic or protein molecules, which can have molecular weights running into thousands or millions.

Explain the significance of molecular weight in chemistry.

What is the molecular weight of hydrogen H2?

What is molecular weight usually expressed in?

• Atomic mass units

• Grams

• Moles

• Kilograms

How does the molecular weight of a small molecule like hydrogen compare to larger organic molecules?

• It is larger

• It is smaller

• It is the same

• It varies greatly

What can the molecular weight of large organic or protein molecules run into?

• Hundreds

• Thousands or millions

• Tens

• Dozens