The video tutorial explains the basics of subatomic particles, focusing on protons, neutrons, and electrons. It distinguishes between atomic mass and mass number, emphasizing the importance of understanding these concepts. The tutorial guides viewers through filling out a PNE table, using chlorine as an example, and explains how to calculate the number of neutrons. It concludes with an example using phosphorus, reinforcing the concepts discussed.

What are the three main subatomic particles discussed in the video?

• Protons, Electrons, and Quarks

• Protons, Neutrons, and Photons

• Protons, Neutrons, and Electrons

• Electrons, Neutrons, and Quarks

Which number on the periodic table represents the atomic number?

• The number of electrons

• The mass number

• The number of protons

• The number of neutrons

What is the mass number of an element?

• The number of neutrons

• The number of protons

• The average mass of all isotopes

• The sum of protons and neutrons

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

• Neutrons

• Electrons

• Isotopes

• Nuclear charges

What is the chemical symbol for chlorine?

• C

• Cr

• Ch

• Cl

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

• Multiply the atomic number by the mass number

• Subtract the atomic number from the mass number

• Add the atomic number and mass number

• Divide the mass number by the atomic number

What is the nuclear charge of an atom?

• The number of electrons

• The mass number

• The number of neutrons

• The number of protons

What is the mass number of chlorine-35?

• 53

• 35

• 18

• 17

Tags

NGSS.MS-PS1-1

What is the chemical symbol for phosphorus?

• P

• Ph

• Ps

• Po

If an element has 15 protons and 16 neutrons, what is its mass number?

• 15

• 16

• 32

• 31