Chemical Equations and Reactions Review

Front

What indicates that a chemical reaction has taken place?

Back

The production of gas (bubbles), temperature change, color change, or formation of a precipitate.

Front

What is the general formula for a decomposition reaction?

Back

AB → A + B

Front

What does it mean if a chemical equation is balanced?

Back

The number of atoms for each element is the same on both sides of the equation.

Front

What is a synthesis reaction?

Back

A reaction where two or more substances combine to form a single product, represented as A + B → AB.

Front

What is a single displacement reaction?

Back

A reaction where one element replaces another in a compound, represented as A + BC → AC + B.

Front

What is a double displacement reaction?

Back

A reaction where parts of two compounds exchange places to form two new compounds, represented as AB + CD → AD + CB.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

Adjust the coefficients in front of the compounds to ensure the same number of each type of atom on both sides.

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat, to the surroundings.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from the surroundings, resulting in a temperature drop.