Thursday 4th September
TODAY WE ARE
LEARNING ABOUT
 How can we use chemical tests to identify an unknown gas?
TODAY'S
KEY WORDS ARE
  • L_m_  w_t_r
  • Q__l_t_t_v_  t_st
  • Q__nt_t_t_v_  t_st
  • L_tm_s  p_p_r
    		•

    Memory Anchor:

    YOU WILL SHOW
    YOUR LEARNING BY...

    • Super Challenge:

      Stretch:

      Challenge:

    Key Questions:

    1. How would you test if carbon dioxide was present In a reaction?
      • Use an aqueous solution of calcium hydroxide (lime water). When carbon dioxide is shaken with or bubbled through limewater the limewater turns milky (cloudy).
    2. How would you test if Hydrogen was present In a reaction?
      • Use a burning splint held at the open end of a test tube of the gas. Hydrogen burns rapidly with a pop sound
    3. How would you test if chlorine was present In a reaction?
      • When damp litmus paper is put into chlorine gas the litmus paper is bleached and turns white.
    4. How would you test if Oxygen was present In a reaction?
      • Use a glowing splint inserted into a test tube of the gas. The splint relights in oxygen