Classification of matter
Substance is the material structure does not change. Substances include pure substances and mixtures. Pure substances can be elements and compounds. while the mixture can be a mixture of homogeneous and heterogeneous. Substances can also be classified into acid, alkaline or neutral based on the degree of acidity.
A. Elements, Compounds and Mixed
A. Elements, Compounds and Mixed
Element
Consider some kinds of objects, such as screws, rings, pots, pencil, and incandescent lamps. Well, do you know is made of
What these objects? Screws made of iron. The ring is made of gold. Wire in incandescent lamps made of tungsten (wolfram). Pan made of aluminum. Pencil lead is made of carbon. Well, iron, gold, tungsten, aluminum, and carbon are examples of elements. After studying the above description, can you conclude whether the element is actually called? The element is a single substance that can not be broken down into other substances simpler through simple chemical reactions. Some of the common elements identified, for example: Arsenic, Barium, sulfur, Beryllium, Iron, Bismuth, Boron, Bromine, Gold, Fluor, Etc.
The elements are already known to exist in the form of metal, non-metal (non-metallic), and semilogam. Metal is the element that has the shiny properties and generally conduct electricity and a good conductor of heat. Metal elements are generally solid at normal temperature and pressure, except for mercury in liquid form. In general, malleable metallic element that can be formed into other bendabenda. Well, can you mention elements including metals? Some metal elements of which are iron, gold, silver, platinum, and copper.
The non-metallic elements are elements that do not have metal-like properties. In general, non-metallic elements are gaseous and solid at normal temperature and pressure.
In addition to metal and nonmetal elements there are also elements semilogam or known as metalloid. Metalloid is an element that has the properties of metals and non-metals. Semilogam element is usually a semiconductor. What is a semiconductor? Semiconductor material which is not able to conduct electricity well at low temperatures, but the nature of the electrical conductivity becomes better when the temperature is higher.
Consider some kinds of objects, such as screws, rings, pots, pencil, and incandescent lamps. Well, do you know is made of
What these objects? Screws made of iron. The ring is made of gold. Wire in incandescent lamps made of tungsten (wolfram). Pan made of aluminum. Pencil lead is made of carbon. Well, iron, gold, tungsten, aluminum, and carbon are examples of elements. After studying the above description, can you conclude whether the element is actually called? The element is a single substance that can not be broken down into other substances simpler through simple chemical reactions. Some of the common elements identified, for example: Arsenic, Barium, sulfur, Beryllium, Iron, Bismuth, Boron, Bromine, Gold, Fluor, Etc.
The elements are already known to exist in the form of metal, non-metal (non-metallic), and semilogam. Metal is the element that has the shiny properties and generally conduct electricity and a good conductor of heat. Metal elements are generally solid at normal temperature and pressure, except for mercury in liquid form. In general, malleable metallic element that can be formed into other bendabenda. Well, can you mention elements including metals? Some metal elements of which are iron, gold, silver, platinum, and copper.
The non-metallic elements are elements that do not have metal-like properties. In general, non-metallic elements are gaseous and solid at normal temperature and pressure.
In addition to metal and nonmetal elements there are also elements semilogam or known as metalloid. Metalloid is an element that has the properties of metals and non-metals. Semilogam element is usually a semiconductor. What is a semiconductor? Semiconductor material which is not able to conduct electricity well at low temperatures, but the nature of the electrical conductivity becomes better when the temperature is higher.
Compound
A compound is a substance composed of two or more elements that combine chemically with mass ratio certain. Can you give examples of compounds? Water and salt is one example of a compound. Why water and salt to a compound said to be? Water and salt is said to compound because it is composed of two elements or more. Water is composed of two types of elements, hydrogen and oxygen with a certain mass ratio and fixed. Table salt is also composed of two types of elements, such as sodium and chlorine with a certain mass ratio and fixed. As another example, nitrogen and hydrogen combine to form ammonia.
A compound is a substance composed of two or more elements that combine chemically with mass ratio certain. Can you give examples of compounds? Water and salt is one example of a compound. Why water and salt to a compound said to be? Water and salt is said to compound because it is composed of two elements or more. Water is composed of two types of elements, hydrogen and oxygen with a certain mass ratio and fixed. Table salt is also composed of two types of elements, such as sodium and chlorine with a certain mass ratio and fixed. As another example, nitrogen and hydrogen combine to form ammonia.
mix
Did you ever make milk? When making liquid milk between milk powder you mix with hot water. After that, stir evenly mix the milk with water so that the milk powder that are solid are not visible again. Well, the milk powder has been mixed with water is called the mixture. In general, a material not comprised of one type of a pure substance, but a mixture of several pure substances. For example, a mixture of sugar syrup (carbon compounds, hydrogen, and oxygen) and water. However, can you distinguish between compounds and mixtures? A compound formed as a result of an event of chemical or chemical reaction, while the mixture resulting from the process of change that is completely different, namely the events of physics. Thus, the mixture can be defined as a material composed of two or more types of substances.
Did you ever make milk? When making liquid milk between milk powder you mix with hot water. After that, stir evenly mix the milk with water so that the milk powder that are solid are not visible again. Well, the milk powder has been mixed with water is called the mixture. In general, a material not comprised of one type of a pure substance, but a mixture of several pure substances. For example, a mixture of sugar syrup (carbon compounds, hydrogen, and oxygen) and water. However, can you distinguish between compounds and mixtures? A compound formed as a result of an event of chemical or chemical reaction, while the mixture resulting from the process of change that is completely different, namely the events of physics. Thus, the mixture can be defined as a material composed of two or more types of substances.
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