Understanding Gold Prospecting and Relative Atomic Mass

During the Great Gold Rush, how did prospectors typically find gold?

• By digging in the desert

• By panning in the ocean

• By filtering river streams

• By mining deep underground

What is the relative atomic mass of an element compared to?

• The mass of a hydrogen atom

• The mass of a helium atom

• 1/12 of the mass of a carbon-12 atom

• The mass of an oxygen atom

Why is carbon-12 used as a reference for relative atomic mass?

• It is the lightest element

• It is abundant and stable

• It is radioactively unstable

• It is the heaviest element

How is the relative atomic mass of an element with isotopes determined?

• By using the mass of the least abundant isotope

• By calculating based on the abundance of each isotope

• By using the mass of the most abundant isotope

• By averaging the masses of all isotopes

What are the two stable isotopes of copper mentioned in the video?

• Cu-64 and Cu-66

• Cu-61 and Cu-67

• Cu-63 and Cu-65

• Cu-60 and Cu-62