When some metals react with oxygen and water, they go ....
rusty
The new product can be separated by traditional methods
false
What is this reaction called?
fermentation
If the products become warmer .....
Exothermic reaction
Take 15 points!
Team 3
In a combustion some new substances are produced
Smoke and ash
Are the atoms in a chemical reaction rearranged in different ways?
Yes, they are
There must be 3 elements in a combustion
Oxygen, heat and fuel
Win 5 points!
Great!
Fermentation involves ...
microorganisms
Take 10 points!
Team 1
In the new product the particles are physically linked
false
There are clues to indicate a chemical reaction is taking place
true
In a chemical reaction the original substances are called reactants
true
The result of a chemical reaction is a substance similar to the original substances
False
Energy change is a clue of chemical reaction
true