chapter 4 n.
Download
Skip this Video
Download Presentation
Chapter 4

Loading in 2 Seconds...

play fullscreen
1 / 9

Chapter 4 - PowerPoint PPT Presentation


  • 77 Views
  • Uploaded on

Chapter 4. What are subatomic particles?. Are parts of matter that make up atoms. protons, electrons, and neutrons. subatomic particles. Particle. Symbol. Charge. Mass. Proton. p +. 1+. 1. Neutron. n. 0. 1. Electron. e -. 1-. Atomic Number. Is the number of protons in an atom.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Chapter 4' - peony


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
what are subatomic particles
What are subatomic particles?
  • Are parts of matter that make up atoms.
    • protons, electrons, and neutrons
subatomic particles
subatomic particles

Particle

Symbol

Charge

Mass

Proton

p+

1+

1

Neutron

n

0

1

Electron

e-

1-

atomic number
Atomic Number
  • Is the number of protons in an atom.
  • all atoms of an element have the same number of protons
  • Each element has a unique atomic number
atoms are neutral
atoms are neutral
  • the number of protons is equal to the number of electrons
  • the charges balance
mass number
Mass Number
  • is the total number of protons plus neutrons.
  • For example Oxygen contains 8 protons and 8 neutrons so its mass number is 16
  • to find the number of neutrons subtract the number atomic number from the mass number.
    • number of neutrons = mass number - atomic number.
how many neutrons does gold 197 have
How many neutrons does Gold-197 have?
  • gold has a atomic number of 79 and a mass number of 197.
    • number of neutrons = mass number - atomic number
    • number of neutrons = 197 – 79
    • number of neutrons = 118
isotopes
Isotopes
  • are atoms of the same element with different numbers of neutrons.
  • isotopes have different mass numbers
  • to distinguish isotopes, isotopes are referred to by there mass numbers
  • Example Oxygen-16 and Oxygen-17
    • Oxygen-16 has 8 p+ and 8 n
    • Oxygen-17 has 8 p+ and 9 n
home work
Home work
  • Section 4.2 work sheet
  • Read section 4.3 page 113 - 118