
Chemical Reactions Quiz
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard
Evelyn Hayes
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the law of conservation state about matter in chemical reactions?
Matter is irrelevant in reactions.
Matter can change into energy.
Matter is always conserved.
Matter can be created or destroyed.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical equation, what do the reactants represent?
The substances that are produced.
The substances that are consumed.
The substances that are irrelevant.
The substances that are catalysts.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of coefficients in a chemical equation?
They represent the number of molecules.
They are irrelevant to the equation.
They indicate the number of atoms.
They change the chemical formula.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens in a synthesis reaction?
A large compound breaks down into smaller ones.
Elements or small molecules combine to form a larger compound.
A compound burns in the presence of oxygen.
Ions swap partners in compounds.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a decomposition reaction?
Zinc replacing copper in a compound.
Methane combusting in oxygen.
Copper II chloride breaking into copper and chlorine.
Calcium and oxygen forming calcium oxide.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of combustion reactions?
They involve the exchange of ions.
They involve the formation of a single product.
They require a carbon-based fuel and oxygen.
They result in the formation of a precipitate.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a combustion reaction, what are the typical products?
Water and carbon dioxide.
Hydrogen and oxygen.
Nitrogen and ammonia.
Sodium and chloride.
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