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          why blood is red? Blood is red because it is made up of red cells, often known as red blood cells. However, studying these cells at a molecular level is required to understand why they are red. Hemoglobin is a protein that is found in red blood cells. Hemes, which give blood its reddish color, are made up of subunits of each hemoglobin molecule. IRON MAKES OUR BLOOD RED Hemes (hemoglobin), in particular, have the ability to bind iron molecules, which then bind oxygen. Because of the interaction between iron and oxygen, blood cells are red. (It appears red because of how light is reflected by the chemical interactions between the iron and the oxygen.) And blood's ability to carry oxygen is critical because when blood flows through the lungs, it picks up oxygen and transports it to the rest of the body until the oxygen is depleted, at which point the blood returns to the lungs to obtain more oxygen.

            The Best Time To Study what is the best time to study When is the best time to study? this question has been debated for many years by students here is our answers  Advantages of Daytime Studying   day study 1. You'll likely have more energy and be able to concentrate the next day after a good night's sleep. 2. Because society is designed around being active during the day and resting at night, there are indisputable benefits to adhering to this standard, such as being able to visit the library or get a cup of coffee with a friend 3. Because most people are reachable during the day, it is easier to speak with your friends or teachers if you have any questions during the day. 4. Natural light is more beneficial to your eyes. Artificial light is harmful to our eyes and can disrupt our natural sleeping patterns.   Advantages of Studying at Night study at night 1. During the day, people are more active, noisier, and intense. It's...

  Tips To choose the best music for studying It is stated that in order to study, one must be in a peaceful, distraction-free setting. Perhaps this will work for you. However, studying in a calm setting can backfire for certain people. This "silent setting" may lead you to fall to boredom and the appeal of napping at your desk! As a result, the significance of selecting appropriate music for learning cannot be taken lightly. Although some studies claim that listening to music while studying is harmful, it is essential for many people. It relaxes them, allowing them to learn more effectively. Music can also improve your mood and motivate you to study for longer periods of time. The actual issue is deciding on the perfect music to listen to while learning. The wrong style of study music can cause you to lose focus on your work. So, today, we'll give you some advice on how to choose the finest study music for you! 1.Classical music is relaxing and soothing, making it an exce...

                How To Predict Exam/Text Questions how to predict exam questions Predicting the questions that will be on the test is an efficient approach to study for tests. Predicting exam questions can help you concentrate on the most crucial topics to know before taking the test. Identifying the most likely sources of knowledge from which your teacher will generate exam questions is the key to predicting test questions. The following are likely source of a test question Any textbook portions that your teacher discusses in class Your teacher may supply information that is not included in your textbook. questions your teacher ask in class. The information that your teacher writes on the whiteboard Your teacher's PowerPoint presentation contains information that you need to know. Anything your teacher reads out loud to you. Verbal cues, such as information repeated by your teacher. Visual clues, such as information provided by your teacher ...

                      how to take good notes in class. how to take notes                That will help you pass your exams Attending class on a regular basis and paying attention are essential, yet they are insufficient. When studying , it's critical to take good and relevant notes that can help you better understand the concepts being taught and above all make you pass the class with flying colors. Here are some tips that will help you take better notes                                           1. Pay close attention. It's all too easy to become lost in thought during a lecture and miss an important point. To avoid dozing off in class, try to get enough rest before lectures. Some people drink coffee before lectures to stay awake, while others chew gum. Pa...

  how to study chemistry by science question and answers Chemistry is one of those subjects that you either enjoy or despise. Chemistry is usually not a required course in high school, but rather an elective. Most reputable universities, on the other hand, require all undergraduate students to take at least one chemistry course in order to graduate. If you want to work in medical, engineering, or a branch of natural science, you'll almost certainly have to take at least one chemistry course before graduating. For most people, chemistry is a difficult topic, but it doesn't have to be. Here are some tips I have for you to make you study and pass any chemistry exam.          1.     Before going to class, review and study the material . a student studying In a traditional learning approach, students come to class, the lecturer explains the content, elaborates on key concepts, assigns additional readings and assignments, and the session closes. St...

Chemistry - Coal and Petroleum Introduction The resources, which are present in unlimited quantity in nature and are not likely to be exhausted by human activities, are known as  Inexhaustible Natural Resources . E.g. sunlight, air. The resources, which are present in limited quantity in nature and are likely to be exhausted by human activities, are known as  Exhaustible Natural Resources . E.g. forests, wildlife, minerals, coal, petroleum, natural gas etc. Exhaustible natural resources were formed from the dead remains of living organisms (fossils); therefore, these natural resources are also known as  fossil fuels . E.g. coal, petroleum and natural gas. Coal Coal is hard as stone and black in color. Coal is one of the fuels used to cook food. Coal is used in thermal power plants to produce electricity. Under high pressure and high temperature, the dead plants those got buried inside the Earth, got slowly converted into coal. Coal contains mainly ...

Classification Of  Elements Introduction There are about 115 elements have been known to us till today. Based on their properties, all the elements are arranged in order, known as periodic table. Johann Wolfgang Döbereiner, a German scientist, first attempted to arrange the elements in 1817. John Newlands, an English scientist, also attempted to arrange the then known elements (in 1866). John Newlands had followed the order of increasing atomic masses to arrange the elements. Newlands started with the element having the lowest atomic mass (such as hydrogen) and ended at thorium, which was the 56th element (at his time). Newlands’ arrangement of elements is known as “Law of Octaves,” as in his arrangement every eight element had the properties similar to that of the first. E.g. the properties of lithium and sodium were found to be the same. Sa (do) re (re) Ga (mi) Ma (fa) Pa (so) da (la) ni (ti) H Li Be B C N O F Na Mg Al Si P S Cl K Ca Cr Ti Mn Fe Co & N...

              15   SCIENCE MOST HARDEST QUESTIONS                                      THAT WILL PROVE YOU ARE DUMB HEY, So you think you are smart enough to answer this questions? I bet you will regret clicking this article in the first place- just kidding😃. But seriously this questions have been debated for years by different scientist the good news is some of this questions have been provided with satisfying answers. but the point is THESE QUESTIONS WILL BE OF GREAT HELP TO STUDENTS IN: helping them to think deeply improving their knowledge concerning science topics looking at science with a different perspective AND ABOVE ALL TO HUMBLE ANY FELLOW STUDENT WHO THINKS HE IS THE SMARTEST IN CLASS😉 PLEASE ENJOY Why is the sky blue? Why does the moon appear in the daytime? How much does the sky weigh? How much does the Earth wei...

Chemistry - Carbon and its Compounds Introduction Carbon plays very important roles for all living beings. The amount of carbon in the earth’s crust is merely 0.02%, which is available in the form of minerals such as carbonates, hydrogen-carbonates, coal, and petroleum. The presence of carbon in the atmosphere of the earth is 0.03%, in the form of carbon dioxide. Compounds of Carbon Almost all carbon compounds (except a few) are poor conductors of the electricity. The diamond and graphite both are formed by carbon atoms; however, the difference lies between them in the manner in which the carbon atoms are bonded to one another. In diamond, each atom of the carbon, is bonded to four other carbon atoms and form a rigid three-dimensional structure (see the image given below). In graphite, each atom of the carbon, is bonded to three other carbon atoms in the same plane, which gives a hexagonal array (see the image given below) − There is also difference in some physical structu...

Chemistry - Metals and Non-Metals 2 Introduction A solid material, which is typically hard, malleable, shiny, fusible, and ductile, is known as metals. E.g. iron, copper, aluminum, magnesium, sodium, lead, zinc, etc. Normally, metals have good electrical and thermal conductivity. Metals, in their pure state, have a shining surface, known as  metallic luster . Metals can be beaten into thin sheets; this property is known as  malleability . The property of metals to be drawn into the thin wires is known as  ductility . E.g. gold is the most ductile metal. Silver and copper are the best heat conductor. Non-Metals The non-metals are normally found in either solids or gases states. However, bromine is an exception that found in liquid state. Some of the major examples of non-metals are carbon, sulphur, iodine, oxygen, hydrogen, etc. Facts of Metals and Non-metals All metals exist in the solid form at room temperature, except mercury. Gallium and caesium have very l...

Materials: Metals and Non-Metals 1 Introduction The metals can be distinguished from the non-metals on the basis of their chemical and physical properties. The property of metals by which they can be beaten into thin sheets is known as  malleability . The property of metal by which it can be drawn into wires is known as  ductility . The metals are normally hard, malleable, lustrous, ductile, sonorous, and good conductors of heat and electricity. E.g. iron, copper, calcium, aluminum, magnesium, etc. The materials, which are not sonorous and are poor conductors of heat and electricity, are known as  non-metals . E.g. sulphur, carbon, oxygen, phosphorus, etc. Some metals, such as  sodium  and  potassium  are soft and can be cut with a knife. Mercury  is the only metal, which remains in liquid state at room temperature. When sulphur dioxide is dissolved in water, sulphurous acid is formed. Illustration - Sulphur dioxide (SO 2 ) + Water (H ...

Chemistry - Acids, Bases, and Salts Introduction We taste food sour and bitter, it is only because of presence of acids and bases respectively. Litmus Solution Litmus, which is extracted from lichen, has purple color (see the image given below), but the condition is when it is neither acidic nor basic, i.e. neutral. Litmus basically is a plant belongs to Thallophyta, and in chemical experiment, it is commonly used as an indicator. The substances, which odor changes in acidic or basic media, are known as  olfactory  indicators. Acid or Base in a Water Solution The hydrogen ions in HCl are produced because of the presence of water. Secondly, the separation of H +  ion from the HCl molecules cannot be done in the absence of water. The chemical formula is illustrated below HCl + H 2 O → H 3 O +  + Cl – Furthermore, hydrogen ions cannot exist alone, but they can exist in presence of water molecules. Therefore, hydrogen ions are shown as H + (aq) or hydronium i...

Chemistry - Chemical Reactions & Equations Introduction A process in which one or more chemical substances react with other chemical substance and converted to one or more different substances is known as chemical reaction. Chemical Equation A chemical equation is the symbolic demonstration of a chemical reaction; it is represented through symbols and formulae. E.g. Magnesium + Oxygen = Magnesium Oxide Mg   +   O 2   =   MgO The substances magnesium and oxygen are known as reactants and the result of reaction, i.e., magnesium oxide is known as product. Remember,  the total mass of the elements present in the products of a chemical reaction has to be equal to the total mass of the elements present in the reactants. The number of atoms of each element always remains same, before and after the chemical reaction. Types of Chemical Reaction Following are the major types of chemical reaction − Combination Reaction Decomposition Reaction Displacement Re...