1 / 25

Atomic Structure

Atomic Structure. Atom. Basic unit of matter Made of subatomic particles. Element. Substance made of same type of atom. Protons. Positive Charge Located in the nucleus Mass = 1 amu Helps make up the mass of an atom # of protons never changes for an element Same as atomic number.

ignatius-leonard
Download Presentation

Atomic Structure

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Atomic Structure

  2. Atom • Basic unit of matter • Made of subatomic particles

  3. Element • Substance made of same type of atom

  4. Protons • Positive Charge • Located in the nucleus • Mass = 1 amu • Helps make up the mass of an atom • # of protons never changes for an element • Same as atomic number

  5. Neutrons • No Charge • Located in the nucleus • Mass = 1 amu • Helps make up the mass of an atom • Can differ in atoms of the same element How to Calculate Neutrons Mass # - Atomic # = Neutrons

  6. Electrons • Negative Charge • Located in the electron cloud • Surrounds the nucleus • Move very fast! • Mass = 0 amu • Does not really count towards an atom’s mass • In neutral atoms, electrons = protons

  7. Atomic Number • Special for every element • Tells # of protons (and electrons) • Located on the periodic table (whole number)

  8. Atomic Mass • Located on periodic table • Has decimals • Average mass of the element’s isotopes

  9. Mass Number • Protons + Neutrons • Whole Number (rounded atomic mass)

  10. Practice • How many protons does nitrogen have?

  11. Practice • What is the atomic mass of calcium?

  12. Practice • What is the mass number of calcium?

  13. Practice • How many neutrons are in chlorine?

  14. Practice • Name of Element: • Atomic Number: • Atomic Mass: • Mass Number: • Protons: • Neutrons: • Electrons:

  15. Practice • Name of Element: • Atomic Number: • Atomic Mass: • Mass Number: • Protons: • Neutrons: • Electrons:

  16. Practice • Name of Element: • Atomic Number: • Atomic Mass: • Mass Number: • Protons: • Neutrons: • Electrons:

  17. Just How Small Are Atoms?

  18. Isotopes • Same element with different numbers of neutrons; therefore, different masses • EX: Carbon-12 Carbon-14 612 C6 14 C

  19. Practice • How many neutrons in Potassium-39 Potassium-41 Fluorine-19 Fluorine-18

  20. Practice • Ni-60 • Protons? • Electrons? • Mass number? • Neutrons?

  21. Practice • Magnesium-26 • Protons? • Electrons? • Mass number? • Neutrons?

  22. Practice • 1529 P • Protons? • Electrons? • Mass number? • Neutrons?

  23. Ions • Charged atom • Gain or lose 1 or more electrons • Proton number does not change

  24. Practice How many electrons in a neutral atom of Na? How many protons in Na? How many electrons in Na +1

  25. Practice How many electrons in a neutral atom of S? How many protons in S? How many electrons in S -2?

More Related