What are the differences between rocks and minerals? A mineral is a single-component solid. Rock is a composite of various elements. Minerals exist naturally in the ground in the form of crystalline crystals with distinct geometrical shapes. However, rocks do not have distinct geometrical forms. Graphite, Dolomite, Feldspar, Ilmenite, Mica, and Quartz are some examples […]
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Introduction Marie Curie, also known as Maria Salomea Skodowska, was born in Warsaw, Poland, on November 7, 1867. She passed away on July 4, 1934. She is a Polish-born physicist most known for her work on radioactivity, for which she received the Nobel Prize twice. Mare Curie is the daughter of a high school science […]
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Blue Whale The Antarctic blue whale is the world’s largest mammal, weighing up to 400,000 pounds (about 33 elephants) and reaching lengths of up to 98 feet. They devour around 7936 pounds of krill per day during the peak feeding season. It is known as the loudest mammal on the planet. The sound they make […]
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The human respiratory system is involved in transporting oxygen (O2) into the lungs and transporting gaseous waste like carbon dioxide (CO2) out of the human body. This process is known as the gas exchange in the lungs. Each and every organ of the human respiratory system is adapted to carry out its specific function in this complex process.
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Coordination in simple words is the proper communication. This proper communication bridges the receptors (sensory organs) and the effectors (muscles or glands). During coordination messages received from the sensory organs are communicated to the relevant effectors in the human body.
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MRI is a technique used in medicine to visualize the inner structures of the body for diagnosing diseases. This is different from X-rays, CT scans, and PET scans. MRI does not use ionizing radiation which can be harmful to the human body. MRI uses strong magnetic fields as well as radio waves to create images of the inside of the human body.
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Hypothalamus carries out its functions via the pituitary gland. That is because some hormones secreted by the hypothalamus acts on the pituitary gland to secrete pituitary hormones. Some other hypothalamic hormones are stored in the pituitary and secreted from the pituitary according to the needs of the human body.
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Common chemical indicators used in the laboratory are discussed in this article. They are; Phenolphthalein Methyl Orange Litmus papers pH papers
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Elements that are found on the Earth are classified as metals, non-metals, and metalloids. Out of 118 elements in the periodic table over 75% are metals. There are common properties that can be seen in metals. Each metal has its unique features as well. Metals react with other chemicals according to their capability of reacting. Here, we consider the metal reactions with air, water, and acids. Some commonly studied examples are elaborated in this article.
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The metals in the periodic table can be categorized into several groups based on their chemical properties. They are alkali metals, alkaline earth metals, transition metals, post-transition metals, lanthanides, and actinides. Here are some examples of metals belonging to each category.
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