A pure substance is a substance that cannot be separated by physical means. eg. filtration, evaporation, distillation or chromatography. Examples of pure substances include water, gold, glucose, carbon dioxide, oxygen and hydrogen. A pure substance is made up of one type of particle. The particle that makes up water is H 2 O.
Here's a video from the Evaluate section in the "Pure Substances and Mixtures" 5E Lesson. This section aims at reviewing and evaluating newly acquired...A substance that is made up of only one type of particle, is called a pure substance. The particles that form the substance can be individual atoms or molecules consisting of many atoms.
Feb 04, 2009 · 2. All particles in a pure substance are the same. Different substances are made up of different particles. 3. There is space between all particles. 4. The particles are always moving. as the particles gain energy, they move faster. 5.The particles in a substance are attracted to one another. Sep 25, 2020 · Pure Substances. 1. Elements. All matter is composed of elements that are fundamental substances that cannot be broken down by chemical means. Element is defined as a substance that can not be further reduced as to simpler substances by ordinary processes. Another definition of element: a material that is composed of only one type of atom. The Separation of a Mixture into Pure Substances The experiment is designed to familiarize you with some standard chemical techniques and to encourage careful work in separating and weighing chemicals. In this experiment you will separate a mixture of three substances, sodium