PURE SUBSTANSES SIMPLE AND COMPOUNDS. SUMMARY. TYPES OF SUBSTANCES SIMPLE SUBSTANCES EXAMPLES OF SIMPLE SUBSTANCES GOLD MERCURY COMPOUND SUBSTANCES EXAMPLES OF COMPOUND SUBSTANCES SALT WATER VIDEOS QUESTIONS & ANSWERS. TYPES OF SUBSTANCES. There are two types of substances
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There are two types of substances
A simple substance is one whose molecules are made up of only one type of atom. For example, oxygen and ozone are simple substances, because their molecules are formed only by oxygen atoms. Other examples are diamonds and graphite, which are simple because they are formed by atoms of a single class.
In the case of gold, depending on its thickness, it presents various shades from yellow, yellowish green, blue or pink (when the layer is very thin). It is a pure substance which has a composition.
Water is a compound of hydrogen and oxygen, its formule is H2O, each water molecule contains two atoms of hydrogen and one of oxygen. Water is colourless, odorless and tasteless. Water is a chemical compound present in large amounts in the Earth, in liquid, solid or gaseous state.
VIDEO OF DIFFERENT SUBSTANCES
A simple substance
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