What is Matter? By donna champagne

Pure Substances

A Pure Substance is a sample of matter with both definite and constant composition with distinct chemical properties.

Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). ... All elements are pure substances. Water, sugar, salt and baking soda are pure substances which are chemical compounds.

Elements

Elements, Mixtures and Compounds. Chemistry is the study of physical matter, which is classified in many different ways, such as state of matter (gas, liquid or solid), chemical form (element, mixture or compound), chemical structure (atoms or molecules, etc.) and so on.

Examples of elements include oxygen, hydrogen, sodium, chlorine, lead, iron. Examples of compounds include water ( or hydrogen oxide ) H2O; and Sodium Chloride, NaCl. H is the symbol for hydrogen; the number 2 as used here means there are 2 atoms of the element hydrogen in every molecule of the compound water.

Compound

Compound: two or more different atoms chemically bonded together. Molecule: two or more different or same atoms chemically bonded together. Element: one single atom

There are many types of compound, like carbon dioxide (carbon and oxygen), common salt (sodium, chlorine), marble ( calcium, carbon, oxygen), copper (II) sulphate (copper, sulphur, oxygen) and hydrogen chloride (chlorine and hydrogen). Compound is made up of two or more elements

Mixtures

A substance made by mixing other substance together.

Examples include ice cubes in a drink, sand and water, and salt and oil. Liquid that are immiscible form heterogeneous mixtures.

Homogeneous

Homogeneous Mixture: A mixture which has uniform composition and properties throughout.

It often contains dissolved minerals and gases, but these are dissolved throughout the water. Tap water and rain water are both homogeneous, even though they may have different levels of dissolved minerals and gases.

solutions

A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances or phases.The three phases or states of matter are gas, liquid, and solid. Some examples of solutions are salt water, rubbing alcohol, and sugar dissolved in water. When you look closely, upon mixing salt with water, you can't see the salt particles anymore, making this a homogeneous mixture. ... This is the part where the solute is dissolved

Heterogeneous

Definition of Heterogeneous Mixtures. A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties. In some mixtures, the initial substances cannot be detected after they have been mixed.

For example, Salt and pepper, chocolate chip cookies, or a Twix™ candy bar, ... are all examples of heterogeneous mixtures, where substances are not mixed on a molecular level. Soda is a heterogeneous mixture (liquid solution) of H2O, C6H12O6, and a few other substances.

Suspension

In chemistry, a suspension is a heterogeneous mixture containing solid particles that are sufficiently large for sedimentation. Usually they must be larger than one micrometer. ... This distinguishes a suspension from a colloid, in which the suspended particles are smaller and do not settle.

Colloid

A colloid, in chemistry, is a mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance

Colloids are common in everyday life. Some examples include whipped cream, mayonnaise, milk, butter, gelatin, jelly, muddy water, plaster, colored glass, and paper. Every colloid consists of two parts: colloidal particles and the dispersing medium. ... Any colloid consisting of a solid dispersed in a gas is called a smoke.

Credits:

Created with images by kevin dooley - "What is amateur photography?" • James St. John - "Gold in iron oxide (Highland Mining District, Silver Bow County, Montana, USA)" • Little Blue Penguin - "mixture.jpg" • zappowbang - "Who put floaters in my beer???"

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