CHEM 1500 Chapter Notes - Chapter 1: Zinc Chloride, Ductility, Mass
10 Oct 2016
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Document Summary
Chemistry definition includes the terms matter, composition and properties. Chemistry is the science that deals with composition and properties of matter. Matter is anything that occupies space, has the property known as mass and displays inertia. All objects we see around us consist of matter. The gases of atmosphere are invisible but are matter as they occupy space and have mass. Sunlight is not matter it is a form of energy. Composition refers to components and their relative proportions in a sample of matter. Ordinary water is made of hydrogen and oxygen present in certain fixed proportions. Composition of water is 11. 19% hydrogen and 88. 81% oxygen by mass. Hydrogen peroxide is also made up of hydrogen and oxygen. Hydrogen peroxide is 5. 93% hydrogen and 94. 07% oxygen by mass. Properties are qualities or attributes that can be used to distinguish one sample of matter from others. Properties of matter are grouped into two categories: physical and chemical.
