Atomic weight

The video explains the difference between atomic mass and atomic weight. Atomic mass is specific to a particular isotope, while atomic weight is an average mass of an element's isotopes. Atomic weight can vary between samples due to differing isotope ratios.

What does atomic mass specifically refer to?

• The total mass of an element

• The average mass of all isotopes of an element

• The mass of an element in a compound

• The mass of a specific isotope of an element

How is atomic weight different from atomic mass?

• Atomic weight is the mass of a single atom

• Atomic weight is the mass of the heaviest isotope

• Atomic weight is the average mass of an element's isotopes

• Atomic weight is the mass of an element in a compound

Why can atomic weight vary between samples of the same element?

• Due to changes in temperature

• Because the ratio of isotopes can differ

• Due to the presence of different elements

• Because the atomic number changes

Which of the following is true about atomic weight?

• It is constant for all elements

• It can vary depending on the isotope ratio

• It is the same as atomic mass

• It is always greater than atomic mass

What factor causes the atomic weight of an element to change?

• The number of protons

• The number of electrons

• The ratio of its isotopes

• The chemical reactivity