Comparing Isotopes Through Apples: A Journey Into Atomic Mass and Structure

The video begins by comparing different types of apples to illustrate the concept of comparison. It describes the characteristics and fictional masses of crab apple, golden delicious, and granny smith apples. The lesson then transitions to atoms, focusing on the nucleus, protons, and neutrons, and their contribution to atomic mass. Using hydrogen as an example, the video explains isotopes, highlighting protium, deuterium, and tritium, and their respective masses. The key takeaway is understanding that both apples and atoms have variations that affect their mass and characteristics.

What is the main purpose of comparing apples to apples in this lesson?

• To understand the nutritional value of apples

• To set a foundation for comparing isotopes

• To learn about different apple recipes

• To discuss the history of apple cultivation

Which apple is described as small, red, and sour?

• Fuji

• Crab Apple

• Granny Smith

• Golden Delicious

What fictional mass is assigned to the Golden Delicious apple?

• 2 amu

• 3 amu

• 1 amu

• 4 amu

What are the primary contributors to the mass of an atom?

• Neutrons and electrons

• Electrons and protons

• Protons and electrons

• Protons and neutrons

Which isotope of hydrogen has one proton and no neutrons?

• Deuterium

• Tritium

• Protium

• Helium

What is the mass of deuterium in atomic mass units?

• 4 amu

• 3 amu

• 2 amu

• 1 amu

Which hydrogen isotope is known to be unstable?

• Deuterium

• Helium

• Protium

• Tritium

What percentage of hydrogen atoms does protium make up?

• Less than 0.02%

• About 50%

• Over 99.98%

• Approximately 75%

How many neutrons does tritium have?

• Three

• Two

• One

• Zero

Despite differences in mass, what remains the same for isotopes of the same element?

• Physical appearance

• Chemical properties

• Taste

• Color