Periodic Table Vocabulary

123456789
Across
  1. 3. A group of elements that have low melting points, are good insulators from heat and electricity, and tend to gain electrons
  2. 5. A group of elements that has a high affinity (attraction for) electrons and are the most reactive non-metals
  3. 7. A large group of elements that have high melting points and densities
  4. 9. Also known as the rare Earth elements, these elements are often used in technology
Down
  1. 1. A group of metals that are less reactive than the alkali but still highly reactive. They have low ionization energy.
  2. 2. A group of metals that reacts violently with water and is the most reactive overall
  3. 4. A group of elements that are very stable and do not react
  4. 6. All of the elements in this group are radioactive
  5. 8. A group of elements that share properties of metals and non-metals