12 Questions
What happens when more reactants are used in a chemical reaction?
More products are produced
What can be inferred about the reactivity of calcium and hydrogen in the reaction Ca + 2HCl → CaCl2 + H2?
Calcium is more reactive than hydrogen
Which of the following is NOT a key concept of the collision theory?
Humidity
What is the effect of increasing temperature on the rate of a chemical reaction?
The rate of reaction increases
Which of the following statements explains why reaction rates generally increase with an increase in temperature?
I, II, and IV only
In the reaction Ca + 2HCl → CaCl2 + H2, what type of reaction occurs?
Combination reaction
What is the relationship between the amount of reactants used in a chemical reaction and the amount of products produced?
More reactants have more atoms to react to form more products.
What can be inferred about the reaction between calcium and hydrochloric acid based on the equation Ca + 2HCl → CaCl2 + H2?
Calcium reacts with hydrochloric acid to form calcium chloride and hydrogen gas.
What is the effect of temperature on the frequency of molecular collisions in a chemical reaction?
Molecules collide more frequently at higher temperatures.
Why does an increase in temperature result in a decrease in the activation energy required for a chemical reaction?
It is not a correct statement. The activation energy does not decrease with an increase in temperature.
What is the effect of an increase in temperature on the fraction of high-energy molecules in a chemical reaction?
The fraction of high-energy molecules is greater at higher temperatures.
What is the relationship between the concentration of reactants and the rate of a chemical reaction?
The concentration of reactants does not necessarily increase with an increase in temperature.
Quiz about the relationship between reactants and products in a chemical reaction. Learn how the amount of reactants affects the outcome of a reaction.
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