You have to make a quick run to the local pharmacy to pick up a few things. You get a bottle of sunscreen, a tube of toothpaste, some cold lozenges, a bar of soap, a tube of diaper rash ointment, and a pack of batteries. You've been carrying around a bunch of pennies in your pocket, so you decide to use them to pay for some of the items. What is so interesting about this particular shopping trip? Every item that you bought contains zinc! Even some of the pennies used to pay for the items contain zinc!
Zinc is a very useful chemical element with many beneficial applications. Let's look at some of the ways that zinc is used in everyday life, industry, and in medicine. Zinc (Zn) is a silver-white transition metal that resides in group 12 of the periodic table.
Industrial Zinc Uses
Zinc is most commonly used to galvanize other metals. Galvanizing is an industrial process in which metals such as iron or steel are covered with molten zinc in order to create a protective coating that prevents rusting. Automobile body parts and bridges are two common uses of galvanized steel.
Common Zinc Uses
Zinc alloys and zinc compounds have several common uses. Zinc alloys are made of combinations of zinc and other metals. Brass is an example of a zinc alloy that is formed when zinc combines with copper. A wide array of items including pipe fittings, jewelry, and musical instruments like tubas are made from brass. Zinc compounds are formed when zinc combines with other elements and compounds. For example, zinc oxide is used to make various products including make-up, rubber, and prescription drugs. Zinc sulfide can be found in x-ray equipment, fluorescent lighting products, and different kinds of paints.
Batteries & Pennies
People have used zinc batteries for many years because zinc is an ideal energy source. There are several different types of zinc batteries including zinc-carbon, zinc-chloride, (both used for powering household items), zinc-air batteries, and zinc-alkaline. Zinc-air batteries are often used to make button cell batteries that power devices such as watches, hearing aids, and calculators. Zinc-alkaline batteries are versatile enough to be used in both light-drain and heavy-drain devices. Everyday household items such as radios and flashlights can be powered by zinc-alkaline batteries. This type tends to better resist leaking and have a longer shelf life.
When you think of a penny does the image of a copper coin come to mind? At one time all pennies were made out of pure copper. However, over the years the way that pennies were made changed in order to include different types of copper, zinc, nickel, steel, and tin alloys. Since 1982, pennies have been made out of zinc metal that's covered with a thin layer of copper.
Medical Uses of Zinc
Zinc plays an important role in human health and can be found in such body parts as teeth, blood cells, and the pancreas. Research shows that zinc is helpful in various health applications such as regulation of the immune system, acne reduction, and treatment of stomach ulcers. Although research is still inconclusive, many people use zinc in an attempt to prevent the common cold. Some other medical uses and health applications of zinc are:
- Improvement of various learning and memory functions
- Treatment of sickle cell anemia
- Promotion of sufficient growth in children
- Successful DNA synthesis
- Personal care products such as sunscreens, diaper rash ointments, toothpaste, and bath soap
Zinc (Zn) is a sliver-white transition metal that's widely used. It appears in many forms including:
- Zinc alloys: combinations of zinc and other metals
- Zinc compounds: combinations of zinc with other elements and compounds
Some common everyday uses of zinc include batteries, brass, and American pennies. A leading industrial use of zinc is the galvanizing process, which prevents the rusting of steel and iron. Zinc is also beneficial in medicine and human health as it can be used in DNA synthesis, promotion of childhood growth, regulating the immune system, and personal care products such as sunscreens, ointments, toothpaste, and soap.
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Zinc: Uses in Everyday Life, Industry & Medicine Quiz
Instructions: Choose an answer and click 'Next'. You will receive your score and answers at the end.
Which American coin is made with a zinc core coated with a thin layer of copper?
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