A Short Trivia Quiz On Chemical Reactions! Trivia Quiz

1. What are 3 factors that affect the reaction rate?

Concentration, temperature, surface tension

Concentration, surface area, color change

Precipitate, concentration, surface area

Concentration, surface area, temperature

The reaction rate is influenced by the concentration of reactants, as a higher concentration increases the likelihood of collisions between particles. Surface area also affects the reaction rate, as a larger surface area provides more opportunities for reactant particles to come into contact with each other. Temperature plays a role in the reaction rate as well, as an increase in temperature leads to higher kinetic energy and faster-moving particles, resulting in more frequent and energetic collisions.

Explanation

The reaction rate is influenced by the concentration of reactants, as a higher concentration increases the likelihood of collisions between particles. Surface area also affects the reaction rate, as a larger surface area provides more opportunities for reactant particles to come into contact with each other. Temperature plays a role in the reaction rate as well, as an increase in temperature leads to higher kinetic energy and faster-moving particles, resulting in more frequent and energetic collisions.

2. What are 4 ways to detect a chemical reaction?

Color change , density, temperature change, formation of a precipitate

Color change, formation of a precipitate, temperature change, formation of a gas

Formation of a gas, formation of precipitate, malleability, density

Color change, formation of a gas, formation of a rainbow, temperature

The answer is correct because color change, formation of a precipitate, temperature change, and formation of a gas are all common indicators of a chemical reaction. Color change occurs when the substances involved in the reaction produce new colored products. Formation of a precipitate happens when two solutions combine to form a solid. Temperature change can occur due to the release or absorption of energy during a reaction. Formation of a gas is often observed when a reaction produces a gas as a product. These four observations are widely used to detect and identify chemical reactions.

Explanation

The answer is correct because color change, formation of a precipitate, temperature change, and formation of a gas are all common indicators of a chemical reaction. Color change occurs when the substances involved in the reaction produce new colored products. Formation of a precipitate happens when two solutions combine to form a solid. Temperature change can occur due to the release or absorption of energy during a reaction. Formation of a gas is often observed when a reaction produces a gas as a product. These four observations are widely used to detect and identify chemical reactions.

3. An exothermic reaction is a chemical reaction where more energy is absorbed rather than released.

True

False

An exothermic reaction is a chemical reaction where more energy is released rather than absorbed.

Explanation

An exothermic reaction is a chemical reaction where more energy is released rather than absorbed.

4. Stuff present at the beginning is the product and the stuff formed is the reactant.

True

False

The given statement is false because in a chemical reaction, the reactants are the substances present at the beginning and the products are the substances formed as a result of the reaction.

Explanation

The given statement is false because in a chemical reaction, the reactants are the substances present at the beginning and the products are the substances formed as a result of the reaction.

5. In a chemical reaction...

Bonds between atoms are broken and then new ones are formed

A chemical change has occurred.

A new substance is produced by changing the arrangement of atoms

All of above

In a chemical reaction, all of the above statements are true. Bonds between atoms are broken and new ones are formed, which indicates a chemical change has occurred. Additionally, the arrangement of atoms is changed, resulting in the production of a new substance. Therefore, all of the given options are correct explanations for a chemical reaction.

Explanation

In a chemical reaction, all of the above statements are true. Bonds between atoms are broken and new ones are formed, which indicates a chemical change has occurred. Additionally, the arrangement of atoms is changed, resulting in the production of a new substance. Therefore, all of the given options are correct explanations for a chemical reaction.