A scientist is studying how certain factors affect the rate of a particular reaction. She observes that under one set of conditions, the reaction proceeded much faster than under a different set of conditions. Identify the most likely sets of conditions that produced each reaction rate. Drag each item to the appropriate bin.

a. lower temperature

b. smaller quantities of reactants

c. higher temperature

d. larger quantities of reactants

Options:

1. Faster reaction

2. Slower reaction

a) lower temperatures: Slower reaction

b) smaller quantities of reactants: Slower reaction

c) higher temperature: Faster reaction

d) larger quantities of reactants: Faster reaction

Explanation:

The rate of a reaction depends on many factors like the surface area of solid reactants, the amount of reactants, temperature, pH, nature of reactants, enzymes etc.

When the temperatures are lower, the molecules of the reactants would not have enough energy to move and hence the reaction will be slower. If the reactants are in smaller quantities, then the reaction will also be slower.

At higher temperatures, the molecules will have more energy to move and hence reaction rate will be faster. Larger quantities of reactants mean faster the reaction and more the products.