View stunning SlideShares in full-screen with the new iOS app!Introducing SlideShare for AndroidExplore all your favorite topics in the SlideShare appGet the SlideShare app to Save for Later — even offline
View stunning SlideShares in full-screen with the new Android app!View stunning SlideShares in full-screen with the new iOS app!
Subatomic particles Daltons Atomic Number Atomic Mass
Isotopes Elements with the same number of protons, but a different number of neutrons.
Isotopes Dating fossils. Tracing atoms. Diagnostics.
Question 1 An electron orbital describes: The orbit of an electron around the nucleus The exact distance of an electron from the nucleus A three-dimensional space where an electron can be found 90% of the time
Question 2 Which electron has higher potential energy? An electron in the first electron shell An electron in the third electron shell Both electrons have equal potential energy
Question 4 An electron shell describes: The average distance of an electron from the nucleus The potential energy of an electron The orbit of an electron around the nucleus
Question 5 Match each of the following bonds with the phrase that describes it. Hydrogen bond Ionic bond Covalent bond
Sharing of a pair of valence electrons by two atoms Attraction of a hydrogen atom covalently bonded to one electronegative atom to another electronegative atom A strongly electronegative atom strips an electron from a less electronegative atom
Question 6 Which electrons have equivalent potential energy? The lone electron of a hydrogen atom and an electron of a helium atom An electron in the 2p orbital of the second electron shell and an electron in the 2s orbital of the second electron shell An electron in the p orbital of the second electron shell and an electron in the p orbital of the third electron shell