Intro to Chemical Reactions Notes QUIZIZZ

What is a chemical reaction?

• The process of creating a physical change in a substance.

• The process of breaking and reforming chemical bonds to create new substances.

• The process of dissolving a substance into another.

• The process of changing the state of matter of a substance.

What are the starting substances in a chemical reaction called?

• Catalysts

• Products

• Reactants

• Enzymes

What are the substances that are formed as a result of a chemical reaction called?

• Reactants

• Mixtures

• Products

• Solutions

In the chemical reaction shown, what are the products?

• Methane and Oxygen

• Carbon Dioxide and Water

• Hydrogen and Carbon

• Carbon Monoxide and Hydrogen

What is the chemical formula for methane?

• CO₂

• H₂O

• CH₄

• O₂

What is the state of matter for reactant ,water, in the chemical reaction shown?

• Solid

• Gas

• Liquid

• Plasma

Which of the following is NOT an indicator of chemical change?

• Formation of new gas

• Change in volume

• Release of energy (heat or light)

• Color change

What does bubbling in a chemical reaction indicate?

• A new solid is forming

• A color change is occurring

• A new gas is forming

• Energy is being absorbed

What does a change in color during a chemical reaction typically indicate?

• A temperature change

• A new gas is forming

• A new solid is forming

• A new substance is forming

What is indicated by a temperature change in a chemical reaction?

• A new gas is forming

• A new solid is forming

• Energy is released or absorbed

• A change in volume