The molecules to the left of the arrow (Oxygen and Iron) are known as the __________ of the above reaction.
Reaction Processes

Quiz
•
Science, Chemistry
•
7th - 8th Grade
•
Hard
ziDragoneye ziDragoneye
Used 2+ times
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reactants
Products
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The molecule to the right of the arrow (Rust) is known as the __________ of the above reaction.
Reactant
Product
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical reaction, the total mass of the reactants is not always equal to the mass of the products.
True
False
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Law of Conservation of Mass states that matter ...
... cannot be created or destroyed
... can be created or destroyed
... cannot be destroyed
... cannot be created
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Molecules are always moving, what must they do if you want them to react? (one word)
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
What do molecules have to have if you want them to react?
Enough energy
Correct orientation
Correct colour
Enough atoms
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An exothermic reaction occurs when the reactants ...
... absorb energy from the enviroment
... release energy into the enviroment
… release as much energy as they absorb
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An endothermic reaction occurs when the reactants ...
... absorb energy from the enviroment
... release energy into the enviroment
… release as much energy as they absorb
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