Source Rev Neurol, 24 Some foods can bring an attack on through an allergic reaction.
Instructions Mix the lemon juice, vinegar and salt in the bowl until dissolved. Take a penny and dip it half way into the mixture for 20 seconds. Take it out - what happened? Put the rest of the pennies into the mixture. In 5 minutes, take 4 of the pennies out and lay them on a paper towel to dry.
Take the remaining pennies out of the mixture and hold them under running water until they are thoroughly rinsed. Lay them out to dry on another paper towel and label them "clean. Why did the pennies look dirty when you started the experiment?
In mid-NovemberCongress authorized the U. Mint to issue the new dollar coin to replace the Susan B. The penny contains only 2. Inthe U. The dime, quarter, and half dollar contain Chemistry can answer these questions! Do you know what an atom is? Atoms are microscopically tiny particles that are the basic building blocks of virtually everything we can see.
Our bodies are made up of billions and billions of atoms - all different shapes and sizes. But some things are made up of only one kind of atom. For example, the copper used for pennies is made up mainly of copper atoms.
But when they join with other atoms, like oxygen in the air, they form molecules - in this case a molecule called copper oxide. The copper oxide makes the pennies look dirty.
Why does the mixture clean the pennies? The mixture is acidic, and the acid from the lemon juice and vinegar dissolves the copper oxide. Why not try to dissolve copper oxide in other acidic mixtures! What can you think of? The pennies that weren't rinsed turned a blue color.
When the mixture removes the copper oxide, it becomes easy for the copper atoms to join together with oxygen and chlorine salt. When this happens, a new compound is formed, called malachite.
Malachite is usually blue-green.Bulletin Board Archived Bulletin Board About John Latest Ideas Symptoms Tests and Drugs Weight Loss Experiment Hyperthyroidism Hypothyroidism Supplement List Medical Science Heredity Other Diseases Thyroid Physiology Deeper Studies Nutrients and Toxics Hair Analysis Book Reports Glossary Table of Contents: COPPER.
Jan 23, · Copper bracelets and other folk remedies, like magnetic straps, were no more effective against arthritis than a placebo, a study found. Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years.
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In , the U.S. Mint converted production of the 95% copper coin to a predominantly zinc alloy, but coated it with copper to preserve its appearance. The U.S. nickel is actually 75% copper. The dime, quarter, and half dollar contain % copper.