Chemistry

The dialogue about “cause and effect” Dhea : Hi, how are you? Inggi : Hello dhea, I'm fine. And you? Dhea : I'm fine too. I have a question for you. Inggi : What is that? Dhea : If the nail is inserted into the water what effect will occur? Inggi: Hmm,  The nail inserted into the container containing the water are corroded due to the presence of O 2  and H 2 O . Dhea : okey inggi, thank you. Now I understand. Inggi : you’re welcome de.

1. Acid Acid is one of the ingredients of various foods and beverages, such as vinegar, cheese, and fruits. According to Arrhenius, acid is a substance that in water will release H + ions. Thus, the acid carrier is an H + ion (hydrogen ion), so the acidic chemical formula always contains a hydrogen atom. Ions are atoms or groups of electrically charged atoms. Cations are positively charged ions. The anions are negatively charged ions. Another characteristic of the acid is that it can react with various materials such as metals, marble, and ceramics. The reaction between acids and metals is corrosive. For example, ferrous metals can react quickly with hydrochloric acid (HCl) to form Iron (II) chloride (FeCl2). Here are some of the Acid species found in everyday life: Vinegar contains acetic acid, Citrus contains citric acid, Wine contains tartaric acid, Apple contains malic acid, Vitamin C contains ascorbic acid, and Eye drops containing boric acid. Stomach aci...

1. accuracy  - Accuracy is a measure of how close a measured value is to its true value. For example, if an object is exactly a meter long and you measure it as 1.1 meters long, that is more accurate than if you measured it at 1.5 meters long. 2. acid  - There are several ways to  define an acid , but they include any chemical that gives off protons or H +  in water. Acids have a pH less than 7. They turn the pH indicator phenolphthalein colorless and turn  litmus paper red . 3. acid anhydride  -  An acid anhydride  is an oxide that forms an acid when it is reacted with water. For example, when SO 3 -  is added to water, it becomes sulfuric acid, H 2 SO 4 . 4. actual yield  - The  actual yield  is the amount of product you actually obtain from a chemical reaction, as in the amount you can measure or weigh as opposed to a calculated value. 5.addition reaction  - An addition reaction is a  chemical reaction ...

The bright morning bell sign had already sounded, indicating the lesson was about to begin, as usual before the teacher continued the next lesson, the teacher would repeat a bit about the weekend last week. Teacher: good morning all ! Student: good morning Ms, Teacher: how are you today? Student: good Ms, and you Teacher: well too thank you, okay today I will just repeat a bit about last week's lesson about the colligative nature of the solution, do you remember what is meant by the colligative nature of the solution? Student: I Ms, the colligative nature of the solution is the properties of the solution that does not depend on the type of solute, but depends only on the amount of solute particles in the solution, including the decrease in vapor pressure, boiling point rise, decrease in freezing point and osmosis pressure . Teacher: good next boy, try to mention the difference between the colligative nature of the nonelectrolyte solution and the colligative nature o...

Petroleum Chemistry Articles ORIGIN OIL EARTH Petroleum (English: petroleum, from Latin petrus - coral and oleum - oil), dubbed also as black gold, is a viscous liquid, dark brown, or flammable greenness, which lies at the top of some areas of the Earth's crust . Petroleum consists of a complex mixture of various hydrocarbons, mostly alkanes, but varies in appearance, composition, and purity. Some scientists claim that oil is an abiotic substance, which means it is not derived from fossils but derives from inorganic substances produced naturally in the bowels of the earth. However, this view is doubtful in the scientific environment. 1. Formation of Petroleum, Natural Gas, and Coal Energy sources that are widely used for cooking, motor vehicles and industries derived from petroleum, natural gas and coal. These three types of fuel come from weathering the remains of organisms so called fossil fuels. Petroleum and natural gas are derived from corpses of sea, plants and animals t...

Magnesium or Mg are included into the alkaline earth metals. Oya, the alkaline earth metal is a strong reducer. The more down, the reducing nature is getting stronger. This is evidenced by the ability to react with increasing water from beryllium (Be) to barium (Ba).And for the case of reacting with water, pure magnesium (Mg) can only react with hot water or water vapor. Because if Mg is reacted with cold water then the reaction will stop and will form magnesium hydroxide which is not soluble in water and make barrier for magnesium to react further. The following general description and physical characteristics of the magnesium element: The atomic number is 12 Her appearance was silvery whiteThe shape is solid The melting point is 923 K or 6500C The boiling point is 1363 K or 10900C The magnesium(Mg) is the eighth largest element that makes up 2% of the earth's crust, and is the third most dissolved element in seawater. And it is also one of the ...

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.[1] Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur. The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is p...