Atomic Structure and Properties

The video tutorial reviews the basic structure of atoms, focusing on protons, neutrons, and electrons. It explains the difference between mass number and atomic mass, and how these relate to the periodic table. The tutorial covers energy levels, atomic charges, and the formation of ions and isotopes. It also includes exercises to reinforce understanding of these concepts, emphasizing the role of protons in identifying elements and calculating mass numbers.

What particles are found in the nucleus of an atom?

• Electrons only

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

Where can you find the mass number on an element symbol?

• Lower right-hand side

• Lower left-hand side

• Upper left-hand side

• Upper right-hand side

How is a neutral atom represented in terms of charge?

• With no charge symbol

• With both plus and minus signs

• With a minus sign

• With a plus sign

What is the maximum number of electrons the first energy level can hold?

• Two

• Four

• Six

• Eight

What identifies an element as a specific type, like carbon or hydrogen?

• Atomic mass

• Number of protons

• Number of electrons

• Number of neutrons

What is the main difference between isotopes of the same element?

• Number of electrons

• Atomic number

• Number of protons

• Number of neutrons

How does adding a neutron affect the mass number of an atom?

• It changes the element

• It decreases the mass number

• It has no effect

• It increases the mass number

What is the relationship between atomic mass and mass number?

• Mass number is the sum of protons and neutrons

• Mass number is an average of atomic masses

• Atomic mass is always larger

• They are exactly the same

How can you determine the number of neutrons in an atom?

• By knowing the atomic number

• By knowing the charge

• By knowing the mass number

• By knowing the number of electrons

What happens to the charge of an atom if it has more electrons than protons?

• It remains neutral

• It becomes negatively charged

• It becomes an isotope

• It becomes positively charged