Table of Contents
Matter is constituted of very small particles such as atoms, molecules and ions. It is anything that has mass and occupies space.
Matter exists in three states namely: solid, liquid and gas. The intermolecular force is the major factor responsible for matter existing in three different states. Also, the difference between these three states of matter is the level of movement of their particles.
Solid contains particles that are arranged in a lattice form. The molecules often vibrate about their fixed positions and do not move freely. In terms of shape, volume and size, solid have definite shape and size. Solid are incompressible, i.e can’t be reduced.
Solid has a large density, meaning they may sink or float in the fluid. Solid may dissolve in some liquids. Solid can exist either as crystalline that is definite geometric form- in one pattern) or amorphous (powered non- orderly particles). The temperature has a great effect on matter as it changes to liquid or gas.
A liquid is a fluid that conforms to the shape of its container but that retains a nearly constant volume independent of pressure. Liquids have a definite volume.
Liquids have no specific shape but take up the shape of their container. Just like solids, liquids are incompressible. They are less dense than solid. Liquids can dissolve solids and gases. Liquids evaporate from open containers. At times, liquid may or may not mix with other liquids. The effect of temperature on liquid is that a decrease changes it to solid. An increase changes the liquid to gas.
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Gas is a state of matter that does not have a fixed size, shape and volume. They assume the shape and volume of its container. Its intermolecular force is weak and maybe negligible hence the freedom at high speed in all directions. Gases are easily compressible.
They can flow and diffuse completely into one another forming a homogeneous mixture. Gases may dissolve in some liquids and may be entrapped in the form of bubbles within liquids. It expands with an increase in temperature: changes to liquid with a decrease in temperature.
It is important to note that recently, two new states of matter have been added. They are plasma and Bose-Einstein condensates (man-made).
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All living things are examples of matter as well as non-living things and man-made objects. Anything that can be smelled, touched and taste is an example of matter. A person, a pet, insects, a tree, bacteria, gold, oxygen, air, clouds, water, vegetable oil, snow, Jupiter, The Sun, wood, a cake, a paper, an ice cream, a computer, a table, paint, a glass, a plastic, a shirt, blood, a steel, sand etc
There are several things that don’t meet the definition of matter, they are Time, Sound, Sunlight, Rainbow, Love, Thoughts, Gravity, Microwaves, Heat, Memories, Information, Reflections, Hate, Angry, Light.
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