Please enable JavaScript.
Coggle requires JavaScript to display documents.
SCIENCE: Show and tell: Chemical Reaction (Glass (broken glass is still be…
SCIENCE: Show and tell: Chemical Reaction
Wood
when we burn wood, we have chemical change
it will no longer be wood
it turns into smoke, ash
if we burn wood in a certain time
there will not be anymore wood
there is just powdery ash
become different matter
wood has been chopped are still wood
Conclusion: sometimes, we start with one kind of matter and it can change into another ind of matter
Some chemical reaction
Vinegar and baking soda
When we mix them
change kind of matter
small bubbles formed
one kind of matter that they turn into is gas (carbon dioxide)
we will have salty water, and it tastes salty
Muffins have vinegar and baking soda
Vinegar and baking soda help the muffins rise
Chemical reaction
is a kind of matter put with another kind of matter and they react
They can also change into a different kind a matter
Glass
A kind of matter
a solid
broken glass is still be glass
be in different kind of species
is still a kind of matter
if we melted those glass, they will still be glass
they are now solid
and if we let those liquid cool, it will be hard again
We can do many thing with glass
it still be the same kind of matter