Homogeneous and Heterogeneous Substances chemical
substance refers to something that belongs to all of the substances. Can be seen with the naked eye
, the classification of the substance as a criterion. The most commonly used method Due to display detailed information about the substance rather than the other way by this criterion are classified into two main groups, the group is
homogenous 1. substances means substances that are composed of one or more types mixed together in harmony. A homogeneous throughout There may be several flags that showed the identical divided into two categories:
1.1. The substance is purified homogeneous material with the same properties are the only elements and compounds. There are physical and chemical properties continue to
(1) the elements means a homogenous compound consisting of a single atom. Can not split or disintegrate into another substance such as silver, gold, iron, carbon, oxygen, hydrogen, etc. elements divided into 3 groups: metal, non-metal elements metalloid
(2) compound represents the pure homogenous due to the incorporation of elements. Since two or more and have unique properties different from the original elements. The ratio of the combination of elements will always remain at
1.2. The solution represents a homogenous substance that caused the two or more substances mixed together by the ratio of the mix of fixed and material generated from. This mix will show different properties from conventional materials such as silver coins syrup, salt, etc.
2. Heterogeneous substance means a substance that is visible to the naked eye is not homogeneous throughout all parts. The second type of substance that caused the combined ratio by uncertainty. Substances that may be in the same state or different states come together. Mix the meat with salt, pepper substances such as flour dust in the air, water and sediment in the water, concrete, etc. There are two types of milk Ladcheag
2.1 is a liquid suspension containing particles of small solid inserts. 10-4 cm in diameter larger than the substance, mixed with a large particle size. It can be seen clearly mixture. Easy to split off, such as flour, water, mud, etc.
2.2. colloid is a substance mixed with harmony. A small particle size, but bigger than a suspension solution. With a diameter of about 10-7 -10-4 cm such as liquid soap, milk and so on.
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