Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is the smallest part of an element that can exist?
   • An atom is the smallest part of an element that can exist.
2. How are atoms of elements represented on the periodic table?
   • Atoms of each element are represented by a chemical symbol.
3. How many different elements are there?
   • There are over 100 different elements.
4. How are compounds formed?
   • Compounds are formed from elements by chemical reactions.
5. How can chemical reactions be detected other than through the observation of new substances forming?
   • Chemical reactions can be measured by a detectable Energy change.
6. What is a compound and how is it respresented?
   • Compounds contain two or more elements chemically combined in fixed proportions and can be represented by formulae using the symbols of the atoms from which they were formed.
7. What type of reaction is needed to separate a compound into elements?
   • Compounds can only be separated into elements by chemical reactions.