Balancing and Types of Rxns

Front

What is a combustion reaction?

Back

A combustion reaction is a chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat. Example: C3H8 + 5O2 -> 3CO2 + 4H2O.

Front

What is the general form of a decomposition reaction?

Back

The general form of a decomposition reaction is AB -> A + B, where a compound breaks down into its individual elements or simpler compounds.

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides.

Front

What type of reaction is CH3OH + O2 → CO2 + H2O?

Back

This is a combustion reaction, where a hydrocarbon reacts with oxygen to produce carbon dioxide and water.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: A + B -> AB.

Front

What is a single displacement reaction?

Back

A single displacement reaction is a reaction where one element replaces another in a compound. Example: A + BC -> AC + B.

Front

What is a double displacement reaction?

Back

A double displacement reaction is a reaction where the anions and cations of two different compounds exchange places, forming two new compounds. Example: AB + CD -> AD + CB.

Front

What is the general form of a combustion reaction?

Back

The general form of a combustion reaction is Hydrocarbon + O2 -> CO2 + H2O.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.