Chemical Reactions Quiz

A chemical reaction can be represented by a chemical equation. When the substances that have a chemical change they are called?

• Chemical reaction

• Reactants

• Chemical Change

• None of the above

Answer explanation

In a chemical reaction, the substances that undergo a change are referred to as a 'Chemical Change'. This term describes the transformation that occurs during the reaction.

New substances formed in a chemical reaction are called?

• Chemical reactions

• Substitution

• Products

• None of the above

Answer explanation

In a chemical reaction, the new substances that are formed are referred to as 'products'. This distinguishes them from the reactants, which are the starting materials. Therefore, the correct answer is 'Products'.

"Products" is the term used to describe the new substances formed in a chemical reaction.

• True

• False

Answer explanation

The statement is false because 'reactants' are the starting substances in a chemical reaction, while 'products' are the new substances formed. Therefore, the term 'products' does not describe the new substances correctly.

Which of the following is not a solid?

• Ice

• Rock

• Water

• Wood

Answer explanation

Water is a liquid at standard temperature and pressure, while ice and rock are solids. Wood is also a solid. Therefore, the correct answer is water, as it is not a solid.

Which of the following is not a liquid?

• Oil

• Baking Soda

• Syrup

• Water

Answer explanation

Baking soda is a solid at room temperature, while oil, syrup, and water are all liquids. Therefore, baking soda is the correct answer as it is not a liquid.

Which of the following is not a gas?

• Oxygen

• Nitrogen

• Milk

• Carbon Dioxide

Answer explanation

Milk is a liquid, while oxygen, nitrogen, and carbon dioxide are all gases at room temperature. Therefore, milk is the correct answer as it is not a gas.

In a decomposition, a single compound is broken down into two or more simpler substances.

• True

• False

Answer explanation

The statement is true because decomposition involves breaking down a single compound into two or more simpler substances, which is the defining characteristic of this type of chemical reaction.

An example of a chemical reaction would be when we placed the bath bomb into the water and the bath bomb started to dissolve and cause gas bubbles.

• True

• False

Answer explanation

The statement is true because when a bath bomb is placed in water, it undergoes a chemical reaction, producing gas bubbles as it dissolves, indicating a change in chemical composition.

The milk caused the bath bombs to have a reaction when they were placed into the water.

• True

• False

Answer explanation

The statement is false because milk does not typically cause bath bombs to react in water. Bath bombs usually react due to their own ingredients, such as citric acid and baking soda, not milk.

Which of the following represents a chemical reaction?

• Dissolving salt in water

• Ice melting into water

• Burning wood

• Mixing sand and sugar

Answer explanation

Burning wood is a chemical reaction as it involves a transformation of substances, producing new products like ash and gases. In contrast, dissolving salt, melting ice, and mixing sand and sugar are physical changes.