Isotopes and Atomic Mass Concepts

The video tutorial explains how to find the mass of one atom of aluminum by using its atomic mass and Avogadro's number. It covers the steps to calculate the mass, convert units, and verify the results. Additionally, it discusses how to calculate the mass of an aluminum isotope.

What is the first step in finding the mass of one atom of aluminum?

• Find the atomic number of aluminum.

• Locate the atomic mass on the periodic table.

• Measure the volume of aluminum.

• Calculate the density of aluminum.

What is the atomic mass of aluminum as mentioned in the video?

• 26.98

• 12.01

• 40.08

• 55.85

What is Avogadro's number used for in this calculation?

• To determine the atomic number.

• To relate moles to the number of particles.

• To convert grams to kilograms.

• To find the volume of a mole of aluminum.

What happens to the units when you divide the atomic mass by Avogadro's number?

• They change to meters.

• They convert to grams.

• They remain as moles.

• They become liters.

How can you convert the mass of an atom from grams to kilograms?

• Add 1000.

• Divide by 1000.

• Subtract 1000.

• Multiply by 1000.

Why is the mass of an atom such a small number?

• Atoms are very large.

• Atoms have a high density.

• Atoms are made of protons only.

• Atoms are very small.

What would you use to find the mass of a specific isotope of aluminum?

• The specific isotope's mass number.

• The atomic number.

• The density of aluminum.

• The average atomic mass.

What is the mass number of the isotope aluminum-26?

• 26

• 27

• 13

• 28

Who is the narrator of the video?

• Dr. B

• Dr. A

• Dr. C

• Dr. D