Natural Sciences

25 Examples of Pure Substances and Mixtures

The universe is composed of matter , which can be classified depending on its characteristics, molecular composition, among other things, it will always be divided into two parts: the pure substance and the substances that are mixtures .

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What are the pure substances?

Well, all those substances that are formed from the beginning by a single and specific chemical element or by basic elements that integrate it into its molecular structure, these are called pure substances.

This substance will always be preserving the physical and chemical properties that compose it, this means that it will not generate changes or reactions to different tests in which they are found, such as the boiling point or being below 0.

With this, we have that, the pure substances, are divided into:

  • Monatomic substances, or better known as simple substances, since these cannot be divided into any of their components.
  • Composite substances, these are in perfect balance and proportion with basic elements with which said substance is made.

Examples of Pure Substances

  • Pure Helium
  • Pure water
  • Sulfur
  • Diamonds
  • Pure gold
  • Graphite
  • Ozone
  • Chloride
  • Benzene
  • Carbon dioxide

What are the substances that are mixture?

These are those that are between two or more pure substances, where their proportions are inconsistent and highly variable, since each of them will have different and individual properties, this is known as a mixed substance or mixed substance, these mixtures do react to the physical and chemical changes to which they are exposed.

In these mixtures there are also two types:

  • Heterogeneous mixture : you can see mixed substances that are distributed in an irregular shape.
  • Homogeneous mixture: these are mixtures that are distributed in a more stable and uniform way, which cannot be observed with the naked eye, but must be carefully analyzed in the laboratory. These are also known as chemical solutions or solutions, as these cannot be separated as easily as heterogeneous ones.

Examples of Mixtures

  • Acetone
  • Ethyl Alcohol or Ethanol
  • Potassium bromide
  • Calcium sulfide
  • Carbon monoxide
  • Ammonia
  • Sodium bicarbonate
  • Salt
  • Sugar
  • Sulfuric acid
  • Sodium Oxide
  • Chloroform
  • Water
  • Carbon dioxide
  • Hydrochloric acid

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