Atomic Structure and Particle Properties

This video tutorial covers the structure of atoms, including protons, neutrons, and electrons. It explains how to interpret element symbols and atomic numbers, and discusses the properties of ions, both positive and negative. The video also explores isotopes, isotons, and isobars, providing examples and calculations to illustrate these concepts. The tutorial is designed for 10th-grade chemistry students and aims to build a foundational understanding of atomic theory.

What are the three main particles that make up an atom?

• Protons, Electrons, Photons

• Protons, Neutrons, Photons

• Protons, Neutrons, Electrons

• Electrons, Neutrons, Photons

Which particle in an atom has a positive charge?

• Neutron

• Electron

• Photon

• Proton

In a neutral atom, the number of protons is equal to the number of:

• Nuclei

• Neutrons

• Electrons

• Photons

What is the atomic number of an element?

• The number of atoms

• The number of protons

• The number of electrons

• The number of neutrons

How does a positive ion form?

• By gaining protons

• By losing electrons

• By gaining electrons

• By losing protons

What is the charge of an electron?

• +2

• 0

• +1

• -1

Which of the following is true for isotopes?

• Same number of protons, different number of neutrons

• Same number of protons and neutrons

• Same number of neutrons, different number of protons

• Same number of electrons, different number of protons

Isotones have the same number of:

• Neutrons

• Protons

• Electrons

• Atoms

What do isobars have in common?

• Same number of electrons

• Same atomic number

• Same number of protons

• Same mass number

Which of the following pairs are isotopes?

• All of the above

• O-16 and O-18

• C-12 and C-14

• H-1 and H-2