|
|
 |
|
|
TGW2:
Hydrochloric acid and magnesium; sulfuric acid and copper
oxide
|
|
 |
LINKS |
 |
|
|
|
|
Notes
on the second video of hydrochloric acid and magnesium
Students should be able to suggest that the reaction gets
slower as there is less hydrochloric acid left to react with
the magnesium: the fewer particles of hydrochloric acid there
are in the same volume of water, the slower the reaction will
be.
Students may also notice that the bubbles of hydrogen are
smaller, too.
Notes on the first video of sulfuric acid and copper oxide
Students should notice that there is no obvious reaction at
room temperature: the copper oxide just settles to the bottom.
When the solution is warmed, the copper oxide disappears and
the solution turns a pale blue, getting slightly darker as
more copper oxide is added and is used up.
|
|
|
|
|
| a
Science Enhancement Programme CD-ROM 2005 |
|
user
guide |
| |
|
|
|
|
