In this lab we took a dull penny from before the year 1970 and changed its color to a shiny gold with the help of chemistry. First, we used a vinegar and salt mixture and scrubbed it onto the penny. This process cleaned all of the dark corrosion spots away and made the copper color shine like new, which then allowed us to have a clean surface to experiment on. This was mostly a physical change but their was a slight chemical reaction because of the acidity of the vinegar. We then heated granular zinc and zinc chloride solution with the penny in a dish on a hot plate until it boiled.…
Alyssa Making Pennies Clean Pennies are shiny when their new, but after time they start to become dull. The one-cent coin was legal tender by the coinage act of 1864 (pennies.org). Abraham Lincoln is on the coin, and was put on the coin in 1909 (pennies.org). The penny was the first U.S. Cent to include the words “in God we trust” (pennies.org). Now how do they become dull and dingy?…
The use of crystals expressed by Wicca societies is remain alive for rituals and healing, in highest form. There’s many to choose from such as; agate, bloodstone, citrine, fluorite, malachite, onyx, quartz, ruby, tigers eye, turquoise just to name a few, also, they’re used anywhere from healing to casting spells and are used in sequence with elements such as; earth, wind, fire, water, spirit and air. Crystals are beautiful, shinny and colorful however, they are full of energy and healing.…
This a gold pan used now with plastic instead of metal. You could also use a cradle or a lomtom. A cradle would find more gold than a pan, but it took two…
When NASA took his work he was upset. However he eventually got his work back. He used chromium and radiation. He wanted to to be able to keep the chromium intact when it is exposed to oxygen. He wanted to so he could let hospitals use chromium to help people with pancreas and liver problems.…
Gallium is one of those elements that is used in industry every day. Gallium was discovered in Paris at the private laboratory of Paul-Emile Lecoq de Boisbaudran (1831-1912) at 3 a.m. on August, 1875. He observed a new violet line in the atomic spectrum of some zinc he had extracted from a sample of zinc blende ore (ZnS) from the Pyrenees. He knew it meant that an unknown element was present. Gallium comes from Gallia, the Latin name for France.…
In 1792 the currency of the United States penny was developed. The circle shaped structure was twice the size of the current penny as we know today. The penny was the United States first currency and Benjamin Franklin is to thank for that. The penny represents the foundation of our country and shows how much we have grown as a nation. But there has been a lot of controversy on whether or not the penny should be kept due to the fact it cost more to make the penny than it is to use it as currency.…
Inhibits muscle fatigue and helps in losing weight. Nopal- Flushes out extra fluid from your body. As a rich source of amino acid it will keep your body energetic and makes your muscles harder since fluid retention becomes low. Chromium picolinate-…
Palladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was it’s named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium. Over half of the supply of palladium and its congener platinum goes into catalytic converters, which convert up to 90% of harmful gases from auto exhaust (hydrocarbons, carbon monoxide, and nitrogen dioxide) into less-harmful substances (nitrogen, carbon dioxide and water vapour).…
The discovery of different types of metals such as copper helped in making stronger tools that were able to last for a longer period of time. During the latter part of the Stone Age, people found that by adding certain metals to copper it would create an even sturdier metal known as bronze. “They discovered that if you add just a little of another very rare metal, it makes the copper stronger. That metal is tin... ”(Gombrich, 9).…
The effects of transitions can be reduced or tackled with love and care of person who is positively attached with the sufferer. For e.g. Going to nursery or school creates anxiety and fear of separation in most children. This situation can be tackled by parents talking to children and encouraging them to enjoy the company of peers and new environment. Parents can accompany children on trial sessions. Warm, welcoming and assuring teachers also make children feel comfortable.…
Perfitt, R (2013) investigated the impact of transitions upon pupils with speech, language and communication needs. He identified stress factors and examined any practical strategies that could be put into place to support these pupils through the transition. Stress factors included bullying, social situations and homework. Research by Snape, J (2006) shows that a systemic approach make transitions for pupils with SLCN even more challenging, as many decisions about placements occur only a few months before commencement, not leaving enough time for a full transition programme. This contradicts recommendations by Hendricks (2009) that transition planning for young people with disabilities, at any stage of life, should begin several years prior…
Hawthorne uses The Evil Assembly as the final stage of transition for Goodman Brown. Hawthorne adds this final element to show Goodman Brown’s final transformation to follow evil. The author is able to explain this transition very well it’s a literal transition from good to evil. Even though Goodman Brown did not partake in any activities during the assembly it’s the things he saw also the people that joined it. Before Brown was still thinking of going to the assembly he notices the minister’s and deacon’s voice.…
CASE 1: PLASTIC COLOR PROBLEM QN. A small plastic product made of Bakelite is black and has a good sales record for years; however sales have begun to drop off significantly. The competition is using bright colors in their product and is taking over the market. In what way can the first company improve its product, add color and increase productivity to lower the price?…
Kitchen utensil made from silver or gold is for the upper classes and copper or brass is for the lower. During the Greek and Roman empires, spoons made…