Atomic Structure and Isotopes

This video tutorial covers the basics of atomic structure, including how to determine atomic numbers, protons, electrons, and neutrons using the periodic table. It explains the creation of isotope symbols and the significance of mass numbers. The tutorial also provides advanced examples, highlighting the importance of charge differences in atomic calculations. The instructor uses a document camera to demonstrate these concepts, ensuring a clear understanding of the material.

What is the primary purpose of using a periodic table in this tutorial?

• To determine the color of elements

• To calculate the speed of chemical reactions

• To measure the temperature of reactions

• To find the atomic number of elements

If an element has an atomic number of 30, how many protons does it have?

• 60

• 45

• 30

• 15

How do you calculate the number of neutrons in an atom?

• Multiply the atomic number by the mass number

• Divide the mass number by the atomic number

• Add the atomic number to the mass number

• Subtract the atomic number from the mass number

What is the isotope symbol for an element with a mass number of 202 and an atomic number of 80?

• Cd-202

• Zn-80

• Ge-80

• Hg-202

Which element has an atomic number of 32?

• Mercury

• Germanium

• Zinc

• Cadmium

What is the mass number of germanium if it has 32 protons and 44 neutrons?

• 32

• 88

• 44

• 76

How many neutrons are in cadmium if its mass number is 115 and its atomic number is 48?

• 163

• 115

• 48

• 67

What is the charge of a beryllium atom with 4 protons and 2 electrons?

• Positive 2

• Positive 4

• Neutral

• Negative 2

What happens to the charge of an atom if it loses electrons?

• It becomes more negative

• It becomes unstable

• It remains neutral

• It becomes more positive

If an atom has more electrons than protons, what is its charge?

• Positive

• Negative

• Unstable

• Neutral