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V6.6 STRING
LINKS
Like wood, string made from plant fibres will decompose on heating.

Watch the video and answer these questions:

Why does the string darken?
What is the ‘smoke’ in the tube?
Why can we see a flame at the mouth of the tube?

What is the black material left at the end likely to be?



Notes: see Teachers’ Guide
 
teachers’ guide v12


more info
v1: flames:hydrogen
v2: flames:methane
v3: more flames
v4: candle wax
v5: combustion
v6: decomposition

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