Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. How are elements ordered in the periodic table?
   • The elements in the periodic table are arranged in order of atomic (proton) number and so that elements with similar properties are in columns, known as groups. The table is called a periodic table because similar properties occur at regular intervals.
2. Metals react to form __________ charged ions
   • Metals react to form POSITIVELY charged ions
3. In terms of electron structure, how are elements in the same group similar?
   • Elements in the same group in the periodic table have the same number of electrons in their outer shell (outer electrons) and this gives them similar chemical properties.
4. Non-metals react to form __________ charged ions
   • Non-metals react to form NEGATIVELY charged ions
5. What does the group and period of an element tell us about its electron structure?
   • Period = Total number of electron shells. Group = Total number of electrons found in the outermost shell
6. Are there more metals or non-metal elements on the periodic table?
   • The majority of elements are metals.
7. Predict how the reactivity of caesium would compare to lithium
   • Caesium would be far more reactive than lithium because it is further down group 1 so it experiences more shielding from the nucleus