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Substance

Chemical Substance

A substance or chemical substance in chemistry or chemical science is a unique form of matter (solid, liquid, gas, plasma) having a definite composition, properties, and structure. All objects or everything in our universe are made up of chemical substances. Therefore, the air we breathe, the food we eat, stones, clouds, stars, plants, and animals everything are examples of chemical substances.

Chemical substances are formed by a single element or chemical compound or a mixture of non-reacting molecules. Pure water (H2O) is an example of a chemical substance formed by one oxygen and two hydrogen atoms. Therefore, the atomic ratio in a pure water molecule is always 2:1. Other common substances are diamond, table salt, refined sugar, alcohol, benzene, a mixture of gases, and metals like iron, copper, aluminum, gold, silver, etc.

Chemical Substance Examples

A chemical substance occurs in nature at different states or phases such as solid, liquid, gas, and plasma. However, different forms of substances are interchangeable from one state to another by changing temperature or pressure. Examples of solid, liquid, and gaseous substances are:

  • Solid: Sugar, sands, rocks, stones, metals like iron, copper, aluminum, gold, silver, etc.
  • Liquid: Water, milk, juice, oil, kerosene, petrol, alcohol, benzene, etc.
  • Gaseous: Mixture of gases (oxygen, nitrogen, carbon dioxide, inert gases, etc. Other gases such as hydrogen, ammonia, nitrogen dioxide, water vapour, sulfur dioxide, etc.

In this part of online learning chemistry, we study different articles or topics related to the properties, composition, structure, production, and uses of a chemical substance.

Peptide structure, sources, uses, and list of peptides with their types of benifits or what they do

Peptides

List of Peptides and What They Do? Peptides are a continuous and unbranched list of amino acid biopolymers joined together by peptide bonds. A list...
Sodium carbonate compound formula Na2CO3, structure, and uses of washing soda or soda ash

Sodium Carbonate

Sodium Carbonate Na2CO3 Sodium carbonate also called washing soda or soda ash is an inorganic compound or salt with the chemical formula Na2CO3. In pure...
Sodium bicarbonate baking soda or hydrogen carbonate powder chemical formula NaHCO3, structure, uses, and side effects on body

Sodium Bicarbonate

Sodium Bicarbonate Baking Soda Sodium bicarbonate (chemical formula NaHCO3), also called baking soda or sodium hydrogen carbonate is a commonly uses effervescent salt or compound...
Calcium oxide quicklime chemical formula CaO, uses, structure

Calcium Oxide

Calcium Oxide Quicklime Calcium oxide (chemical formula: CaO), also called quicklime or burnt lime, is a widely used chemical compound in our daily lives formed...
Chemical formula to structure drawing or writing table chart for methane, ammonia and water molecules or compounds

Chemical Formula

Chemical Formula Drawing A chemical formula is the shortest way to represent a compound or molecule with the help of symbols and chemical proportions of...
Maltose sugar formula C12H22O11, chemical structure, hydrolysis, food sources and maltose syrup

Maltose Sugar

Maltose Malt Sugar Maltose Sugar also called maltobiose or malt is a carbohydrate or monosaccharide formed by two α-D-glucose units held together by α(1→4) glycosidic...
Bromocresol green (BCG) ph indicator solution in titration

Bromocresol Green pH Indicator

Bromocresol Green Indicator Bromocresol green (BCG) is a dye that is used in chemistry as a pH indicator in acid-base titration and in thin-layer chromatography...
Starch formula, definition, use, and structure of amylose and amylopectin

Starch

Starch in Plants Starch is a soft, white powder and tasteless carbohydrate reserved in plants. Various types of starches found in plants are the most...
Zinc sulfate formula ZnSO4 and ionic structure with side effects, benefits and uses of zinc sulfate supplement

Zinc Sulfate

Zinc Sulfate Formula Zinc sulfate (chemical formula ZnSO4) is an inorganic compound of zinc that is used as a dietary supplement for treating zinc deficiency....
Potassium hydroxide or caustic potash chemical formula and uses of KOH solution in food and making soap

Potassium Hydroxide

What is Potassium Hydroxide? Potassium hydroxide (formula KOH), also called caustic potash or lye is a chemical compound which uses mainly for making soft soap....