Using English to give Evidence
Chemical reactions are changes in elements or chemical compounds so that other compounds occur because of the loose element. The compounds or the initial compounds involved in the reaction are referred to as reactants. Different chemical reactions are used together in chemical synthesis to produce the desired product of the compound. There are many chemical reactions in everyday life, including:
1. Burning
Every time we light a match, burn a candle, make a fire, or light a grill, we will see a burning reaction. Combustion combines energetic molecules with oxygen to produce carbon dioxide and water.
For example, propane combustion reactions, found in gas grills and some fireplaces, are:
Every time we light a match, burn a candle, make a fire, or light a grill, we will see a burning reaction. Combustion combines energetic molecules with oxygen to produce carbon dioxide and water.
For example, propane combustion reactions, found in gas grills and some fireplaces, are:
C3H8 + 5O2 → 4H2O + 3CO2 + energy
2. Mixing Chemical
If we just combine vinegar and baking soda to make chemical volcanoes or milk with baking powder in a recipe, we experience the displacement or double reaction metathesis (plus some other things). The material recombines to produce carbon dioxide and water gases. The carbon dioxide forms a bubble in the volcano and can help increase roasting. These reactions seem simple in practice, but often consist of several steps. Here is the overall chemical equation for the reaction between baking soda and vinegar:
HC2H3O2 (aq) + NaHCO3 (aq) → NaC2H3O2 (aq) + H2O (s) + CO2 (g)
3. Photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy, usually from the Sun, into a chemical energy that can then be liberated to fuel organism activity. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water. Plants produce food for themselves and animals and convert carbon dioxide into oxygen:
Photosynthesis is a process used by plants and other organisms to convert light energy, usually from the Sun, into a chemical energy that can then be liberated to fuel organism activity. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water. Plants produce food for themselves and animals and convert carbon dioxide into oxygen:
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
4. Aerobic Respiration
Aerobic cellular respiration is the reverse process of photosynthesis in molecular energy coupled with the oxygen we breathe to release the energy needed by our cells plus carbon dioxide and water.
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (36 ATPs)
5. Anaerobic Respiration
Anaerobic respiration describes a set of chemical reactions that allow cells to gain energy from complex molecules without oxygen. Cell muscles perform anaerobic respiration every time we get rid of oxygen which then reaches them, like during intense or prolonged exercise. Anaerobic respiration by yeast and bacteria used for fermentation, to produce ethanol, carbon dioxide, and other chemicals that make cheese, wine, beer, yogurt, bread, and many other common products. The overall chemical equation for one form of anaerobic respiration is:
C6H12O6 → 2C2H5OH + 2CO2 + energy
7. Saponification
The saponification reaction is a hydrolysis reaction of fats / oils by using strong bases such as NaOH or KOH to produce glycerol and fatty acid salts or soaps. To produce a hard soap is used NaOH, while to produce a soft soap or liquid soap used KOH. The difference between hard and soft soap when viewed from its solubility in water is hard soap is less soluble in water when compared with soft soap
What about the chemical reaction in our body (human)? Give an example to me..
BalasHapusMetabolism is the chemical processes that occur in the body of a living thing / cell. Metabolism is also called enzymatic reaction, because metabolism always occurs using enzyme catalyst.
HapusWhat is different between photosyntesis and aerobic respiration?
BalasHapusRespiration is a biochemical process that converts food into energy with oxygen, and it occurs in the cells of all living things. In respiration, the biochemical energy of the food is converted to adenosine triphosphate (ATP) and carbon dioxide using oxygenRespiration is a biochemical process that converts food into energy with oxygen, and it occurs in the cells of all living things. In respiration, the biochemical energy of the food is converted to adenosine triphosphate (ATP) and carbon dioxide using oxyg, The aerobic respiration process uses oxygen as the last electron acceptor
Hapusand Photosynthesis is a biochemical process that converts sunlight energy into organic compounds using carbon dioxide. Carbon dioxide (CO2) reacts with water (H2O) in the presence of sunlight to form glucose (C6H12O6) and oxygen (O2)
What is NaOH function in soap making?
BalasHapusIn the soap of palm oil, many clots are produced. Addition NaOH solution acts as a neutralizing acid because NaOH is alkaline. The base used is NaOH to obtain a solid soap, but if used KOH base then obtained is liquid soap (soft). Soaps obtained from Na or K metals with high fatty acids are generally readily soluble in hot water. This solubility results in a milky white colloid solution. This solubility property will decrease when in water there are metal ions capable of producing a substitution reaction which results in the formation of calcium salt, while the supernatant is a liquid having no foaming properties on shaking.
Hapuswhat about saponification ?
BalasHapusSoap is one of the products obtained from oil. The soap forming reaction of the oil is carried out by reacting an alkali (in this experiment used NaOH) with oil. This reaction is known as saponification reaction (saponification). Besides being a soap-forming reaction, this reaction can indicate the presence of different fatty acids in an oil.
HapusThe saponification reaction is a hydrolysis reaction of fats / oils by using strong bases such as NaOH or KOH to produce glycerol and fatty acid salts or soaps. To produce a hard soap is used NaOH, while to produce a soft soap or liquid soap used KOH. The difference between hard and soft soap when viewed from its solubility in water is hard soap is less soluble in water when compared with soft soap. Saponification reaction is also called saponification reaction.
Why process of burning using oksigen?
BalasHapusBurning is a reaction that releases heat energy. Once started, the reaction releases more heat than enough to melt the wax more so that the burning preoses continue. In the event of a candle burning there is a change of physics and chemical change.
HapusThis symptom is caused by the adhesion or cohesion between the liquid and the gap wall. Cohesion is a force between molecules of the same type and adhesion is a style of interaction of molecules of a different kind (Giancoli, 2001). The heat of the fire causes the liquid wax to evaporate and will then mix with oxygen resulting in the combustion process.
To produce hard soap is used NaOH, while to produce soft soap or liquid soap used KOH. What about soap powder?
BalasHapusIn general, the alkali used in soap making is generally only NaOH and KOH, but sometimes also using NH4OH. i feel your opinion Soft soap no soap powder, so soap powder used KOH
HapusPlease Explain the important points of the materi.?
BalasHapusChemical reactions are changes in elements or chemical compounds so that other compounds occur because of the loose element. The compounds or the initial compounds involved in the reaction are referred to as reactants. Different chemical reactions are used together in chemical synthesis to produce the desired product of the compound. There are many chemical reactions in everyday life, including:
Hapus1. Burning
2. Mixing Chemical
3. Photosynthesis
4. Aerobic Respiration
5. Anaerobic Respiration
6. Saponification
Why Saponification must use KOH?
BalasHapusSoap is made from the process of saponification of animal fats (tallow) and from plant oils. The fat broodstock is called fatty acids consisting of long hydrocarbon chains (C12 to C18) that bind to form carboxyl groups. Short chain fatty acids are rarely used because they produce less foam. The saponification reaction is a basic hydrolysis of an ester with an alkali (NaOH / KOH) (Luthana, 2010).
HapusLiquid soap is made by saponification reaction between castor oil and alkali (KOH). To improve clarity, plus glycerin or alcohol.
The alkaline types commonly used in the saponification process are NaOH, KOH, Na2CO3, NH4OH, and ethanolamines. NaOH is the most widely used alkaline in making hard soap. KOH is widely used in the manufacture of liquid soap because of its water-soluble nature. Na2CO3 (soda ash / sodium carbonate) is a cheap alkali and can pile fatty acids, but it can not flush triglycerides (oil or fat) (Prime, 2009).
What are the chemicals that distinguish between aerobic and anaerobic reactions?
BalasHapusDifferences in Oxygen Requirement As mentioned in the sense of both, the difference between aerobic and anerobic respiration is one of them lies in the need or absence of an organism against the presence of oxygen in the respiration process it does. In aerobic respiration, oxygen is needed because it is an important element that supports the success of catabolism. While in the process of aerobic respiration, organisms do not require the presence of oxygen. 2. Location Differences Aerobic and anaerobic respiratory processes also occur in different locations. Aerobic respiration is common in organelles called mitochondria, while anaerobic respiration is common in the cytoplasm. 3. Differences in Processes and Stages Differences in aerobic and anaerobic respirations lie in the processes and stages. The aerobic respiration process tends to be more complicated and complex as it passes through stages which include glycolysis, the krebs cycle, and electron transport. While anaerobic respiration has a process that tends to be simple, ie through the stages of glycolysis or fermentation. 4. Differences in Energy Products Generated The process of aerobic respiration will produce much greater energy than the anaerobic respiration process. Aerobic respiration generally produces energy of 36 ATP, while anaerobic respiration produces only 2 ATP of energy.
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