Atomos, Compuestos y Cambios de Materia

Apuntes

The Atom Getting Together: An Introduction to Compounds Directions: ① Read, Highlight/Underline, Annotate * write one annotation (note) Getting Together: ② Answer questions # An Introduction to Compounds Element= of kind- form 42 43 44 45 46 47 w. 11 no longer of hyd. All matter is made of tiny particles called atoms. Atoms, themselves, are made of even smaller particles called protons, neutrons, and electrons. Sometimes the atoms join together or combine. When the same kinds of atoms join together, they make an element. Remember, an element is matter made of one kind of atom. Sometimes different kinds of atoms join together. They form a compound. The atoms join in a process called a chemical reaction. When the atoms join, a new substance is formed that has properties that differ from the properties of the original atoms. That sounds pretty confusing. Let's take a look at an example to make things a little easier to understand. Hydrogen is a colorless, odorless gas at room temperature. Oxygen is also a colorless, odorless gas at room temperature. When hydrogen and oxygen are combined in a chemical reaction, they form water. Water is a liquid at room temperature. The properties of w...