Stoichiometry deals with the calculation of the mass and volume of reactants and products in chemical reactions. The term stoichiometry was first introduced by the German chemist Jeremias Benjamin Richter (1762-1807) in the late 19th century. It relates to the relative amounts of reactants and products in a chemical reaction. His calculations are based on the fact that atoms cannot be created or destroyed. The number and types of atoms before and after the reaction are always the same.

**One Step Equations Worksheet** – In math, **one step equations** or linear equations are a bunch of two or more linear equations that have several same sets of variables. The purpose of the system of linear equations (SPL) is to find the coordinate value.

To find the meeting value of two linear equations, you can use the substitution method and the elimination method. If a system of linear equations is depicted in a Cartesian diagram, the value of the system of linear equations is the meeting of the two linear equation lines.

Trigonometry is the science of mathematics that studies angles, sides, and the ratio between angles to sides. Basically using a triangle shape. This is because of the meaning of the word trigonometry itself which in Greek means the measurements in the angle of three or triangles.

**Comparing fractions** is an operation that we commonly find in mathematics. A fraction is a number that can be expressed in the form “a / b” where a is called the numerator while b is called the denominator. Examples of fractional numbers are 1/3 and 2/7.

When compared, the two fractions have different values. Comparing here means determining the relationship between the two fractions more than, less than, or equal to. To understand how to compare 2 fractions, we take the following example.