Friday 5th September
TODAY WE ARE
LEARNING ABOUT
 Why are metals useful?
TODAY'S
KEY WORDS ARE
  • C_nd_ct__n
  • _ll_y
  • N_n_sc__nc_
  • W_rk_ng  w_th  n_n_p_rt_cl_s  _s  c_ll_d  n_n_t_chn_l_gy.n_n_m_tr_,  1  nm,  _s  _n_  b_ll__nth  _f  _  m_tr_  (_r  _  m_ll__nth  _f  _  m_ll_m_tr_)
    		•

    Memory Anchor:

    YOU WILL SHOW
    YOUR LEARNING BY...

    • Super Challenge:

      Stretch:

      Challenge:

    Key Questions:

    1. Why are metals good conductors of electricity?
      • Metals are good conductors of electricity because the delocalised electrons in the metal carry electrical charge through the metal.
    2. In pure metals atoms are arranged in layers. What property does this give them?
      • It causes them to be malleable (means they can be bent and shaped).
    3. Why are metals good conductors of thermal energy?
      • Metals are good conductors of thermal Energy because Energy is transferred by the delocalised electrons.
    4. Why are pure metals often mixed with other metals or carbon?
      • Pure metals are too soft for many uses and so are mixed with other metals to make alloys which are harder.
    5. Why are alloys harder than pure metals?
      • Alloys are harder than pure metals as alloys contain atoms of different sizes. This causes distortion of the layers of atoms compared with the regular struccture of a pure metal. The regular structure in a pure metal allows the layers to slide over one another.