Dialogue Cause and Effect

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 O₂ and H₂O.

Dhea : okey inggi, thank you. Now I understand.

Inggi : you’re welcome de.

TM 12 : Using english to give evidance

Give Evidence of the Chemical Reactions In Everyday Life

This is the essence of our daily lives and occurs in the foods we eat, the air we breathe, the water we drink, are all the result of the chemical reaction process. In fact, osmosis like love, hatred, also driven by chemical reactions. To better understand the almost chemical reactions around us, we have provided everyday examples in two parts. First, an example of a chemical reaction in our body and two examples of chemical reactions that exist outside our body or occur around us.

Chemical Reactions In The Body

Chemical reactions play an important role in our survival, and living without chemicals can not even be imagined. They participate in the main functions of the body, control our emotions, supervise the process of metabolism and keep the disease. The oxygen we breathe, the essential nutrients we need, the genes that make our bodies - DNA and RNA - are all composed of different elements and compounds.

1. Metabolism
Organic processes that occur in the human body are called metabolism, which involves a large number of chemical reactions. Enzymes secreted by different organs act as biocatalysts that accelerate the rate of reaction, while the hormones regulate the occurrence of time and velocity. Our wellbeing, smooth function and normal health depend on metabolic processes. The coordination and simultaneous occurrence of this process of life in an orderly manner is the reason we are fit, healthy and alive.

2. Respiration
Breathing is the exchange of gases between the organism and its environment. Respiration is a chemical reaction process, which is a reaction between glucose or sugar with oxygen, which releases energy.
This is the process by which inhaling oxygen from the air causes lung inflation and then deflation occurs by exhaling carbon dioxide into the environment. Reactions that occur during breathing: -
C6H12O6 + 6O2 ➜ 6CO2 + 6H2O + Energy

3. Water Composition
Water is the elixir of life on Earth. Hydrogen is a highly flammable gas and oxygen is a gas that is unlikely to react without burning, one another forming a covalent bond to create the most effective fire extinguisher called water. The chemical reaction formula of water is H2O. Yes! We drink everyday chemical reactions. Water is very important for all metabolic processes that occur in our body. As Leonardo da Vinci states "Water is the driving force of the whole world."

4. Feeling Hungry
When you feel hungry ghrelin hormone is secreted by the stomach that triggers hunger. It stimulates the release of growth hormone. It plays a role in insulin release and protection of cardiovascular organs. More ghrelin is produced thus increasing your desire for food.

5. Tears and Crying
Sometimes, crying is a natural reflex. Studies have shown that emotional tears contain manganese, an element that affects temperament and more prolactin.
Prolactin is the hormone that regulates milk production. Removal of prolactin and manganese is thought to ease build tension in the body and make you feel energized.
So, next time you feel slumped and need to vent your emotions, do not get arrested. cry! It will help you feel better.

Chemical Reactions Around Us

The reaction of chemical reactions affects the things around us and there are many examples where chemicals and chemical reactions help us live a better life. Cooking food, clothes we wear, fertilizers we use for plants, cement used to build homes, power plants that generate electricity, and many other processes that depend on chemical reactions. Human dependence on the natural sciences is on the rise and to understand this, here are some examples that highlight the importance of chemical reactions around us.

1. Photosynthesis
Photosynthesis involves the transformation of energy and is a process of chemical reaction where plants, algae, and some bacteria produce their own food. This is the synthesis of glucose by using carbon dioxide and water in the presence of sunlight trapped by chlorophyll present in the leaves. The reaction is described as:
6CO2 + 6 H2O + Energy Light ➜ C6H12O6 + 6O2
Photosynthesis is the reverse process of respiration. They are both interdependent. To get an unbroken supply of oxygen, and the plants get the carbon dioxide they need. Thus, photosynthesis plays an important role in our daily life.

2. Apples turn brown
Apples contain an enzyme called polyphenol oxidase (PPO), also known as tyrosinase. Cutting apples shows cells that react to atmospheric oxygen and oxidize phenolic compounds present in apples. This is called enzymatic browning that changes the brown apples when cut. In addition to apples, enzymatic browning is also seen in bananas, pears, avocados and even potatoes.

3. Noda Removal

The soap is formed by the reaction between alkali and fatty acids. It produces molecules with one hydrophilic and one lipophilic end. Lipophilic ends stick oil, oil or dirt. This can be removed by soap and drift with the flow of water, leaving a clean surface. It's just a physical reaction that happens. Soap and stain cleaners act as emulsifiers that allow oil and water to mix and oily mixtures and stains on the body and clothing can be removed after using soap, stain and water removers.

4. Fruit Maturation A simple hydrocarbon gas ethylene exchanges the genes necessary to stimulate the secretion of a maturation enzyme that catalyzes the reaction to alter the properties of the fruit. Ethylene channelizes are the actions of several other chemical reaction substances called hydrolases, amylases, pectinases and kinases. These enzymes convert starch into sugars, change cell walls to make them softer, neutralize acids and cause fruit to emit aromas.

5. Sunblock
Sunscreen is a combination of organic and inorganic compounds. Inorganic chemical reaction materials such as titanium dioxide or zinc oxide, form a barrier on the body that reflects or transmits UV waves.
Organic components such as octyl methoxycinnamate (OMC) or oxybenzone absorb UV light and release their energy as heat. It protects our skin from burning and harmful effects such as cancer.

6. The kutek removers

Nail polish consists of three types of organic solvents and elements of drying, thickening and hardening elements together with dye. Actually organic solvents used as an ingredient in nail polish are acetone or ethyl acetate. So when you use a busting that will only bring it back to its original state. Solvent molecules enter between the polymer chains and separate them, making it easy to clean with cotton balls.

Dialog between teacher and student

Student : Good morning Miss, how are you ?

Teacher : morning too, I’m fine do you have problem that you want to say !

Student : yes miss, I want ask about pH in chemical substance

Teacher : oh, oke oke please talk ?

Student : first, I want ask what is definition of pH Miss ?

Teacher : pH or power of  hydrogen is the acidity that is used to express the               degree of acidity or alkali nity of a solution which is owned by

Student : whether it can be defined, Miss ?

Teacher : pH can to definition as kalogaritma dissolved hydrogen (H⁺) ion activity

Student : oh, that means the hydrogen ion activity coefficients can’t be measured experimentally, so they are based on theoretical calculations.

Teacher : yes of caurse, pH scale is not the absolutions scale. It’s relative to a set of standar solution whose pH was stipulated by international treaties.

Student : what pH will exchange if I mix acid solution with conjugation acid Miss

Teacher : oh, if you do that, the pH not change because that become buffer solution

Student : okay Miss , thank you. Now, I understand about pH

Teacher : you’re welcome, I feel happy if you can understand fast

Student : see you, Miss

Teacher : see you to in the next class tomorrow.