Study guide 8.P.1.1 and 8.P.1.2

  1.  What is the ratio of of H2O?.  that means how many hydrogen elements and how many oxygen elements.
  1. How many different elements are in the substance H2O?
  1. How do you know what is a compound?
  1. How is carbon dioxide and salt similar?
  1. What is the smallest unit of an element?
  1. What elements are in the same family of Lithium (Li) and Potassium (K)?
  1. What property of matter can easily be determined by looking at the periodic table?
  1. How are elements organized by their properties?
  1. How is the periodic table used to identify properties of elements?
  1. If you have invented a new element where on the periodic table it would be located?
  1. Since there are reactive and non reactive elements, depending on their groups, which two groups are the ones that will be the most reactive together.
  1. What group is the most reactive nonmetal?
  1. Which group is the most reactive metal?
  1. Why are metalloids significant?
  1. What are the physical properties of metals?
  1. What are the physical properties of nonmetals?

  1. Why is the alkali metal group the most reactive?
  1. Why are elements that are in the same group in that group?
  1. How is the periodic table organized?
  1. A material can be identified by its behavior when chemically combined.  What property best supports this?   A.  density   b.  Reactivity     c.  specific heat      d.  Melting point
  2. What does the atomic number represent in the periodic table?
  1. Which group on the periodic table does not react with any other group?