Define a chemical element 2 Describe the structure of an atom Copyright 2015

Define a chemical element 2 describe the structure of

This preview shows page 13 - 24 out of 102 pages.

1.Define a chemical element. 2.Describe the structure of an atom.
Image of page 13
Image of page 14
Image of page 15
Image of page 16
Image of page 17
Image of page 18
Image of page 19
Copyright © 2015 Wolters Kluwer • All Rights ReservedElements (cont.)Atomic StructureNucleusAt atom’s centerComposed ofProtons; positively chargedNeutrons; not chargedElectronsNegatively chargedOrbit in energy levels around the nucleusDetermine atom’s chemical reactivity
Image of page 20
Copyright © 2015 Wolters Kluwer • All Rights ReservedFigure 2-2 The oxygen atom.How does the proton number of this atom compare with the electron number?Elements (cont.)
Image of page 21
Copyright © 2015 Wolters Kluwer • All Rights ReservedElements (cont.)Atomic NumberEqual to the number of protons in an atom’s nucleus.Also represents the number of electrons orbiting the nucleus.No two elements share the same atomic number.8OxygenO16.00Oxygen’s nucleus contains eight protons. Its atomic number is 8.
Image of page 22
Copyright © 2015 Wolters Kluwer • All Rights Reserved Elements (cont.) Energy Levels Regions around an atom’s nucleus where electrons orbit.
Image of page 23
Image of page 24

You've reached the end of your free preview.

Want to read all 102 pages?

  • Fall '15
  • Atom, Wolters Kluwer Health, Wolters Kluwer

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture