Chemical Reactions Overview

A symbolic representation of a chemical reaction using chemical formulas and coefficients to show the reactants and products.

The substances that react in a chemical reaction.

The substances that are produced in a chemical reaction.

A word equation describes a chemical reaction using the names of the reactants and products.

Represents the number of molecules of each substance participating in a chemical reaction.

States that in a closed system, the total mass of reactants before a reaction equals the total mass of products after the reaction.

The process of adjusting coefficients in a chemical equation to ensure that the number of atoms of each element is the same on both sides of the equation.

A chemical equation that includes the chemical formulas of the reactants and products, where the coefficients are adjusted to satisfy the Law of Conservation of Mass.

Information in a chemical equation that tells us the state (solid, liquid, gas, or aqueous) of each reactant and product, as well as the temperature and pressure at which the reaction takes place.

Instructions in chemical equations that describe the conditions, like temperature, pressure, or the presence of a catalyst, that are needed for a reaction to occur.

A chemical equation where the number of atoms for each element on the reactant side is equal to the number of atoms for that element on the product side.

Chemical equations provide a symbolic representation of a chemical process, much like a recipe provides a step-by-step guide for a dish.

An arrow used in chemical equations to show the direction of the reaction. It indicates the change from reactants to products.

A technique used to balance chemical equations where you adjust coefficients to make the number of atoms of a specific element even on both sides of the equation. This works best when one side has an even number of atoms for that element and the other side has an odd number.

The process of adjusting the coefficients in a chemical equation to ensure that the number of atoms of each element is the same on both sides of the equation. This ensures that the law of conservation of mass is followed.

Numbers placed in front of chemical formulas in an equation to indicate the relative number of molecules or formula units of each substance involved in the reaction.

Identifying the elements that appear only on one side of the chemical reaction, meaning they are found either in only one reactant or solely in a product, and balancing them first. This strategy often simplifies the balancing process.

A group of atoms that act as a single unit in a chemical reaction.

Treats polyatomic ions as a single unit when balancing chemical equations, simplifying the process.

The substances that are produced in a chemical reaction.

The substances that react in a chemical reaction.

A chemical equation that includes the chemical formulas of the reactants and products, where the coefficients are adjusted to satisfy the Law of Conservation of Mass.

A chemical equation where the number of atoms for each element on the reactant side is equal to the number of atoms for that element on the product side.

A word equation describes a chemical reaction using the names of the reactants and products.

The symbols and numbers in a chemical formula that indicate the types and quantities of atoms in a molecule.

The numbers written before the formulas of reactants and products in a chemical equation, indicating the relative number of molecules involved in the reaction.

A chemical reaction where a single reactant breaks down into two or more products.

A chemical reaction where two or more reactants combine to form a single product.

A chemical reaction that involves the transfer of electrons between reactants, resulting in changes in oxidation states.

A series of elements arranged in order of decreasing reactivity, where an element can displace elements below it from their compounds.

A chemical reaction where a more reactive element displaces a less reactive element in a compound.

This is a type of chemical reaction where one element reacts with a compound and displaces another element from the compound, resulting in a new element and a new compound.

The more reactive element can displace the less reactive element from its compound.

In a displacement reaction involving a single element and a compound, the less reactive element is left behind as a new element.

The presence of the element that gets displaced in the solution indicates that the element higher in the Activity Series is more reactive.

The more reactive element is higher on the Activity Series.

A chemical reaction where a single metal reacts with a compound and displaces another metal or hydrogen, or a non-metal displaces another nonmetal.