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.

What is molecular weight usually expressed in?

• Liters

• Grams

• Atomic mass units

• Meters

Which of the following is an example of a small molecule?

• DNA

• Glucose

• Protein

• Hydrogen (H2)

What is the molecular weight of hydrogen (H2) considered to be?

• Undefined

• Small

• Moderate

• Very large

What can the molecular weight of large organic molecules reach?

• Billions

• Thousands or millions

• Hundreds

• Tens

Which type of molecules can have a molecular weight in the millions?

• Small molecules

• Inorganic molecules

• Large organic or protein molecules

• Simple gases