Chemical Reactions Test Review
Authored by Maryah Hart
Chemistry
8th - 9th Grade
Used 1+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What happens to the number of atoms in a reaction?
They stay the same in both the reactants & products
They increase in products
They decrease in reactants
They decrease in products
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following lists all the elements that are present in a molecule of potassium carbonate, K2CO3 ?
Arbon and Oxygen
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following equations follows the law of conservation of mass?
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
NaOH + HCl --> NaCl + H2O Identify the reactants in the chemical equation above.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The Law of Conservation of Mass states
that matter exists in all states and reacts the same
that matter can only be changed into new substances by introducing a catalyst
that matter exists in the same state throughout any chemical change
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The following is what type of reaction:
PbCl2 + AgNO3 → Pb(NO3)2 + AgCl
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