Rate of Reactions

Quiz
•
Science
•
9th Grade
•
Medium
Standards-aligned
Lisa Thompson
Used 2+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the meaning of the rate of reaction?
Decrease in amount of product
Decrease in amount of product against time
Increase in amount of products against time
Increase in amount of reactants against time
Tags
NGSS.HS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The rate of reaction for the decomposition of hydrogen peroxide decreases with time because
product of reaction decreases
temperature of hydrogen peroxide decreases
volume of hydrogen peroxide decreases
concentration of hydrogen peroxide decreases
Tags
NGSS.HS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Products will form faster if____________
the particle size of the reactants are larger.
temperature is decreased.
concentration of the reactants are increased.
the reaction is not stirred.
Tags
NGSS.HS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The collision theory states that atoms, ions, and molecules must collide in order to react.
True
False
Tags
NGSS.HS-PS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A catalyst works by
changing the order of the reaction
increasing the temperature
lowering the activation energy
making the activated complex
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The following equation represents a chemical equation.
CaCO3 + 2HCl --> CaCl2 + CO2 + H2O
Which graph shows the correct change in mass of reactant used in excess against time?
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following explains the meaning of effective collision?
The collision where its energy is less than the activation energy
The collision that has a low energy
The collision which takes place before a reaction
The collision that causes a reaction
Tags
NGSS.HS-PS1-5
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