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