aterials in the Body - fluid balance assigment

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Task 2

States of matter

Matter is material that has substance and occupies space. There are three different types of matter these are, Solid, Liquid, Gas, and Solid matter

Bone, cartilage and skin are materials that are solids this is because the atoms/molecules are packed tightly together that the motion is reduced to a very tiny vibration.

Liquid matter

Blood, tissue fluid, lymph and urine are all liquid this is because they can flow, the atoms/molecules are further apart then in a solid and so the atoms have more movement, resulting in flowing. Liquids take shape from their container whether this is a vessel such as in blood and lymph.


Gases also occur in the human body, oxygen, carbon dioxide and nitrogen are common constituents of the air that we breathe in. The atoms/molecules are much further apart from each other and are able to move about a lot more freely.

this picture shows the different molecules for solid, liquids and gases.


Particulate material

Particles such as dust from coal can reach even the tiniest air passages, causing scarring and disease. Such particles are very fine, particulate material can enter any open wound and rest in deeper tissues, where the macrophages will attempt to engulf and digest the partials. Bacteria digested by lysosomes will leave some debris behind such as particulate matter for example a person lungs who smoke or work in a dusty environment resulting in blackened tissues resulting from particulate matter.

Ionic material

This is material containing atoms that may have a positive or negative charge as a result of gaining or losing electrons. Ionic material is designated by the relevant charge shown against the atom.

In solution

Substances that are capable of dissolving in a liquid are called solutes; the liquid is the solvent and the solute dissolved in the solvent is a solution. Water is the most common molecule in the human body and most chemical reactions involve molecules dissolved into water.

Relevant colloidal forms

A colloid consists of larger particles, which are dispersed or scattered throughout a medium gas, liquid or solid.

Protein sols

Cytoplasm is an example of a colloid caused by the protein molecules that are not readily dissolved on water, so it is a protein sol. Blood plasma is another protein sol because of its plasma protein content. Polysaccharide molecule can also produce colloids when mixed with water. They are not readily soluble, as the molecules like proteins as they can be too large to dissolve.
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An emulsion occurs when one liquid is dispersed in droplets in another, such as fat in milk. Emulsifying agents cause one liquid to form very small droplets which increases the surface area. This is what happens when bile salts are added to fats in chime in the small intestine, the fats brake up into thousands of tiny globules, producing a milky appearance.

Movement of materials


When there is a large number of molecules of a substance and a small number in another area with no effective barrier between them, this random motion ...

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