Chem-101 Chapter 7: Chemical Reactions

Vocabulary flashcards based on Chapter 7 of the Chem-101 lecture notes.

Chemical Reaction

A process where substances change into new substances with different properties.

Evidence of Chemical Reactions

Indicators such as color changes, formation of a solid, emission of gas, and light emission that suggest a chemical reaction has occurred.

Precipitation Reaction

A reaction that forms a solid (precipitate) when two aqueous solutions are mixed.

Net Ionic Equation

An equation that shows only the species that actually participate in a chemical reaction, omitting spectator ions.

Aqueous Solution

A homogeneous mixture where a substance is dissolved in water.

Diatomic Elements

Gases that exist in pairs (H2, O2, N2, etc.) as a natural state.

Balancing Chemical Equations

The process of ensuring that the number of atoms for each element is the same on both sides of a chemical equation.

Oxidation-Reduction (Redox) Reactions

Reactions that involve the transfer of electrons, where one substance is oxidized and another is reduced.

Acid-Base Reaction

A reaction that typically produces water and a salt when an acid reacts with a base.

Gas Evolution Reaction

A type of reaction that produces gas as one of the products.