
chem
Quiz by MAYA JULIANNA LIZADA
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
- Q1
Under the collision theory, the particles must collide with ____ and ____ for a reaction to occur.
sufficient energy and correct orientation
sufficient rate and sufficient energy
sufficient catalyst and sufficient energy
sufficient surface area and correct orientation
30s - Q2
More collisions correspond to a:
Slower reaction rate
Faster reaction rate
Constant reaction rate
None of the above
30s - Q3
Why does a higher temperature increase the rate of a reaction?
it only increases the frequency of particle collisions
it reduces the activation energy of the reaction
it increases both the frequency and energy of particle collisions
it only increases the energy of particle collisions
30s - Q4
In the chemical reaction, the successful formation of products depends on the following factors EXCEPT:
The collisions between reacting molecules must be effective.
The energy of colliding molecules must be equal to or more than the activation energy
The colliding molecules must approach each other in the right orientation
Collision between molecules must produce sufficient energy to overcome the activation energy
30s - Q5
The catalyst alters the rate of a chemical reaction by,
providing an alternative pathway with a lower Ea
increasing the frequencies of collisions between molecules
changing the products formed in the direction of the reaction
providing a surface on which the molecules react
30s - Q6
The ____________ states that atoms, ions, or molecules must collide in order to react.
transition state
collision theory
activation energy
rate law
30s - Q7
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction.
reactant
solute
catalyst
product
30s - Q8
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
truefalseTrue or False30s - Q9
Which of the following best describes why increasing temperature increase reaction rate?
Collisions become more frequent and more energetic.
Collisions become more frequent.
Collisions become more energetic.
Activation energy is reduced.
30s - Q10
To measure rate of reaction, we can monitor the concentration change in which of the following?
Reactants or products
Reactants only
Products only
30s - Q11
What is the activation energy?
The energy of the reactants
The minimum energy needed by the reactants to form the products.
The energy lost in the reaction
The energy of the products
30s - Q12
What is the best definition of rate of reaction?
The rate at which all the reactants are used up
The time it takes for one of the reactants to be used up
The change in concentration of a reactant/product per unit time
The time it takes to use up all the reactants
30s - Q13
What is another name for enzymes?
microorganism
biological/natural catalysts
inorganic catalysts
chemical catalysts
30s - Q14
If the reactant particles collide with less than the activation energy, the particles will be rebound, and no reaction will occur. (BONUS)
truefalseTrue or False30s - Q15
A catalyst be regenerated or used again and again
truefalseTrue or False30s