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Q 1/26
Score 0
Which factor does NOT affect the rate of a chemical reaction?
30
The surface area of solid reactants
The concentration of reactants
The temperature
The color of the reactants
Q 2/26
Score 0
What happens to the rate of a reaction when the temperature is increased?
30
The rate decreases
The reaction stops
The rate increases
The rate stays the same
26 questions
Q.
Which factor does NOT affect the rate of a chemical reaction?
1
30 sec
Q.
What happens to the rate of a reaction when the temperature is increased?
2
30 sec
Q.
Which of the following changes will most likely increase the rate of a reaction involving a solid reactant?
3
30 sec
Q.
Which of these statements best describes a catalyst?
4
30 sec
Q.
What effect does stirring a solution have on the rate of a chemical reaction?
5
30 sec
Q.
What is one effect of decreasing the temperature of a reaction mixture?
6
30 sec
Q.
Which of these factors can affect the rate of a reaction involving solids?
7
30 sec
Q.
Which of the following changes would NOT increase the rate of a reaction involving gases?
8
30 sec
Q.
What is the effect of increasing the concentration of reactants in a reaction?
9
30 sec
Q.
What type of catalyst is commonly used in catalytic converters in cars?
10
30 sec
Q.
Which of the following is an example of a catalyst?
11
30 sec
Q.
What happens to a catalyst at the end of a reaction?
12
30 sec
Q.
If 10 grams of solid reactant E is consumed in 5 minutes during a reaction, what is the average rate of consumption of reactant E in grams per minute?
13
30 sec
Q.
During a chemical reaction, the volume of gas produced was measured to be 150 cm3 after 30 seconds. What is the average rate of gas production in cm3/s?
14
30 sec
Q.
A student collects 240 cm3 of hydrogen gas in 40 seconds during an experiment. What is the average rate of gas production in cm3/s?
15
30 sec
Q.
In a lab experiment, 180 cm3 of oxygen gas is produced in 45 seconds. Calculate the average rate of gas production.
16
30 sec
Q.
If a chemical reaction produces 90 cm3 of carbon dioxide gas in 30 seconds, what is the average rate of gas production?
17
30 sec
Q.
During an experiment, 180 cm3 of helium gas is collected in 60 seconds. What is the average rate of gas production in cm3/s?
18
30 sec
Q.
In an experiment, a reaction yields 120 cm3 of argon gas in 40 seconds. What is the average rate of gas production?
19
30 sec
Q.
Which of the following is a sign of a chemical reaction?
20
30 sec
Q.
Which of the following indicates that a gas might be produced in a chemical reaction?
21
30 sec
Q.
What is a common indication that heat is released during a chemical reaction?
22
30 sec
Q.
Which of the following signs suggests that a chemical reaction has absorbed heat?
23
30 sec
Q.
What is a sign of a chemical reaction involving combustion?
24
30 sec
Q.
Which of the following is NOT a sign of a chemical reaction?
25
30 sec
Q.
What is one sign that a chemical reaction has occurred when two substances are mixed?
