Explanation

The equation A+B → AB represents an addition reaction, where two substances (A and B) combine to form a new compound (AB).

Explanation

• The given reaction, CaO + CO2 → CaCO2, is an example of a Combination Reaction, also known as a Synthesis Reaction or Addition Reaction.
• In this reaction, two substances, calcium oxide (CaO) and carbon dioxide (CO2), combine to form a single compound, calcium carbonate (CaCO2).

Explanation

• An Addition Reaction is also known as both a Combination Reaction and a Synthesis Reaction.
• All three terms refer to a chemical reaction where two or more substances combine to form a new, single compound.

Explanation

The statement "Total mass of the reactants and products will remain conserved during a chemical reaction" is called the Law of Conservation of Mass.

Explanation

• The products in the reaction are Carbon dioxide (CO2) and Water (H2O).
• These products are formed through the combustion of Methane (CH4) and Oxygen (O2), releasing energy in the process.

Explanation

• The reactants in the reaction are Methane (CH4) and Oxygen (O2).
• These two substances combine to form the products Carbon Dioxide (CO2) and Water (H2O), releasing energy in the process.

Explanation

• A chemical reaction is a process in which one or more substances are converted into new substances, often with a change in chemical composition and properties.
• Chemical reactions involve the breaking and forming of chemical bonds, resulting in a transformation of the original substances.

Explanation

• Leaves changing colors in the fall is an example of a chemical reaction.
• During this process, the production of chlorophyll (the green pigment) slows down, and the production of other pigments.
• Like carotenoids and anthocyanins increases, causing the leaves to change color.

Explanation

• When a metal bubbles when placed in an unknown liquid, it indicates that a chemical reaction has taken place.
• Bubbling is often a result of a gas being released during a reaction.
• In this case, the metal is reacting with the unknown liquid to produce gas, causing the bubbling effect.
• This is a clear indication that a chemical reaction has occurred.

Explanation

• Burning of wood is a chemical change, as it involves a chemical reaction between the wood and oxygen.
• Resulting in a change in chemical composition and the formation of new substances (ashes, carbon dioxide, water vapor, etc).