SUBSTANCE AND MIXTURE

• Substance - is matter which has specific composition and specific properties.
• Mixture - product of the combination of compounds and elements without chemical change
• Element - 1 type of atom
• Compound - two or more element
• Combustion - Fast combination of a fuel with oxygen ; produces heat, light, and new substances in the form of smoke and ashes
• Electrolysis - The use of electricity to separate or break a compound into elements or simpler compounds.
• Oxidation - The interaction of oxygen with the substance or material to form a new product
• Tarnishing - A slow combination of bright and shiny metal with oxygen and sulfur or another substance produces a dark coating on metal, losing its brightness.