And properties of the substance. Matter (Matter) means that there is a mass and be able to 5 senses touch, such as soil, water, air, etc., within a matter of a matter referred to the substance (Substance) Substance (Substance) is a matter known to treasure or a matter to be studied, and is therefore a specific matter which are properties of the substance. Category 2: -Physical properties (Physical Property) refers to the properties of the external features and notice about how the physical, such as density, boiling point, melting point. -Chemical properties (Chemistry Property) refers to the property that is caused by a chemical reaction works such as combustible, the rust, the acid-base of the substance.Changes to the substance. Changing the substance divided in 2 formats: -Physical changes (Physical Change) means a change of physical properties on the substance without affecting the. Internal elements and the new substances, such as water solubility, to change the status. -Chemical alterations (Change Chemistry) means a change of substance related to the chemical properties which affect the internal elements and the properties differently, that is, the occurrence of new substances such as salts, acids (HCl) react with magnesium (Mg), the wire, and then generate hydrogen gas (H2) is the new.To provide seamless communication They can be classified into 4 situations: 1. using the status criteria Divided into 3 groups: -Solid state (Solid) has a fixed shape and volume, where the particles within it are aligned next to each other, such as alkaline potassium permanganate (KMnO4), copper (Cu) -Liquid state (Liquid) will have a shape according to the packing container and volume in which particles are close together within less than solid, and has a range of properties, such as flow, oil, alcohol, mercury (Hg), etc. -The State is a gas (Gas) is the shape and volume are not fixed shape changes according to the container that contains the particles within it is the most common and the treasure is a fluid, such as cooking gas, air. 2. using the message body as the physical properties of the substance are observed characteristics of different substances which are classified into two groups:. -One body substance (Substance Homogeneous) means that. Substances that have the same chemical content, every contribution to the substance with similar properties throughout all sections, such as alcohol, gold (Au), metal soldering. -Mixed meat substance (Substance Heterogeneous) means that. Substances with different chemical content in each section to make the substance it contains treasure is not the same throughout all parts, such as water, steam, water, Thai Canal, etc. 3. the soluble as are recognized in three groups: -Soluble substances such as salt, Curry (NaCl) potassium permanganate (KMnO4) is alkaline, etc. -Soluble substances, such as chlorine gas (Cl2) does, carbon dioxide (CO2), etc. -Substances that can not be soluble, such as sulfur (S8), iron (Fe), etc. 4. apply power as the criteria are recognized as a group 2: -Electrical substance such as copper (Cu), salt water, etc. -Non-electrical substance such as limestone (CaCO3), oxygen gas (O2) But most of the compounds are broken down according to the chemist chemical content traits as a criterion. As follows: On the pure service (Pure Substance) is the only meat byproducts are the boiling point and melting point fixed. Element (Element) is a pure substance consisting of atoms of the same type, such as carbon (C), sulfur (S8) Compound (Compound Substance) is caused by the elements from 2 or more combined with the ratio in the constant collaboration of course include vinegar acid (CH3COOH), haidonkhlorik acid (HCl), etc. Of the mixture (Mixture) means the substance that caused the substance came from a mixture of 2 or more without limiting the ingredients and mix together. There is no chemical reaction occurring between the elements that bring a mix which has 3 categories: 1. solution (Solution Substance) is the only body that has the proportions of a combination of elements or compounds could not be written to a formula and certainly has a smaller particle size 10-7 cm, with status 3, such as air, water, soft drinks, and all types of alloy, alloy, etc., which solution is divided into 2 parts: solvent (Solvent) and was dissolved (Solute) are noted as follows: -Substances which have to be solvent and low volume, which will be dissolved. Alcohol disinfection With 70% ethanol and water (H2O) 30%, it means that the water is soluble and ethanol as a solution because there is a greater percentage of alcohol by volume water. -Any substance that has the status as well as aqueous solution as solvent. Syrup, syrup is a condition that is a liquid (Liquid) and therefore conclude that water is the solvent and sugar (C12H22O11) is dissolved. 2. suspension (Suspension Substance) is a substance that is caused by particle size diameter greater than 10-4 cm, which is floating in the middle of the doyonuphak are available in a large range of ingredients. It can be seen clearly in the mix of particles. When you leave the particle sedimentation area comes down that the suspension will not be able to pass both the filter paper and paper like Beethoven cello mud, water, roasted Thai. 3. colloid (Colliod) are composed of particle diameter between 10-4 and 10-7 cm, there will be no settling which may be light this phenomenon is called krachoeng which means "the event appears thindon" and within the particles, they are mobile and easily Brown (Brownian Movement) It is a movement that is not, of course, In a straight line, which will be able to borrow from a so-called "ultra micro-scope" (Ultramicroscope), colloids will be phankradat filter, but it cannot be phankra dat cello Beethoven, such as glue, fresh milk.
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