Peso molecular

The video explains the concept of atomic mass units and how molecular weight is measured. It highlights the molecular weight of small molecules like hydrogen, which is typically a small number, and contrasts it with larger molecules that can have molecular weights in the thousands or millions.

What is molecular weight typically expressed in?

• Units of temperature

• Units of length

• Units of atomic mass

• Units of volume

Which of the following is an example of a small molecule with a low molecular weight?

• Carbon Dioxide CO2

• Water H2O

• Hydrogen H2

• Oxygen O2

What is the molecular weight of hydrogen (H2)?

• One

• Two

• Four

• Three

How high can molecular weight values reach?

• Billions

• Tens

• Thousands or millions

• Hundreds

Which statement is true about molecular weight?

• It is irrelevant in chemistry.

• It can vary from small numbers to millions.

• It can only be expressed in units of volume.

• It is always a small number.