Tony Nguyen Honors Chemistry Period 7 9/17/13 The Density of Metals Lab BACKROUND: Density is a constant relationship between the mass and volume of a specific type of matter. Measurements of both mass and volume can be obtained for a metal sample. The relationship can be shown graphically by plotting the volume of a sample on the horizontal x-axis and the mass of the sample along the vertical y-axis. Plotting the values for several samples‚ a linear relationship can be seen for a density (slope=density)
Premium Volume Density Metal
Schools have Metal Detectors? Have you ever felt violated‚ disrespected and dishonored to the point of no return? Many students around the world feel such a way every day. According to a 2002 National School Board Association report‚ 10.1 percent of school districts nationwide implement the use of metal detectors. Are metal detectors even effective? Why should students be forced to cooperate with a violation of their rights? High Schools around the world should not employ the use of metal detectors
Free High school Education
A metal is defined as an opaque shiny element which possesses properties such as malleability and ductility. Malleable meaning that they can be hammered into shapes and ductile meaning they can be drawn into wires. They are also very strong and posses high tensile strength and are good conductors of heat and electricity. Metals are shiny‚ and also have high densities. Metals are a very important and significant part of chemistry. However‚ their importance is not just limited to chemistry; they are
Premium Aluminium
STRENGTHENING OF METALS There are 4 major ways to strengthen metals‚ and all work because they make dislocation motion more difficult. They also reduce the ductility: 1) Cold work (Strain Hardening) 2) Reduce grain size (Strengthening by Grain Size Reduction) 3) Add other elements in solid solution (Solid Solution Strengthening) 4) Add second phase particles (Precipitation or Age Hardening) • These mechanisms may be combined. • For example‚ the world’s strongest structural material (with
Premium Solubility Metal
Acid Property #1: The word acid comes from the Latin word acere‚ which means "sour." All acids taste sour. Well known from ancient times were vinegar‚ sour milk and lemon juice. Aspirin (scientific name: acetylsalicylic acid) tastes sour if you don’t swallow it fast enough. Other languages derive their word for acid from the meaning of sour. So‚ in France‚ we have acide. In Germany‚ we have säure from saure and in Russia‚ kislota from kisly. Base Property #1: The word "base" has a more complex
Premium Acid Alkali Carbon dioxide
ACIDS AND BASES The reason that acid-base reactions are so important is that many of the things you come into contact with on a daily basis are either acids or bases. Most fruits are acids‚ as are carbonated beverages‚ tea‚ and battery acid. Common household bases include baking soda‚ ammonia‚ soap‚ and antacids. What are acids and bases? There are not one but three common definitions used to describe acids and bases: 1. Arrhenius acids and bases 2. Brønsted-Lowry acids and bases 3. Lewis acids
Premium Acid Acid dissociation constant Acetic acid
I. BACKGROUND Precious metals and gemstones have been a popular investment vehicle especially in Asian countries and on the part of those who are constantly moving from one country to another. Asians have a special fondness for them because precious metals and gemstones have enabled them to survive hard times most especially when the super power waged their wars on our shores. Another reason for this is the presence of many gold deposits and mines in our country
Premium Gold Silver Jewellery
EXTRACTION OF METALS SUMMARY Most metals exist in compounds in rocks in the Earth’s crust. Many of these ores contain oxides or sulphides of the metals. The compounds need to be reduced to produce the metals as elements. Metals are very useful to us because of their special properties. Reduction means removal of oxygen or gain of electrons. Carbon is a good chemical reducing agent because it readily combines with oxygen‚ but it is only useful for the metals below it in the Reactivity
Premium Aluminium Hydrogen Iron
Study of Gold metal Date: 14/01/2013 Submitted to: Dr Sami Habib Submitted by: Jamil Mahfoud (A1010659) I- General introduction about metals: a- Historical background Back to 6000 BC‚ process metallurgy is known as one of the oldest applied sciences. Despite that the form of metals was very basic but it has a big impact on the society because of its wide uses especially as tools for agriculture or hunting and even as artistic styles later on. There are 86 known metals so far that were
Premium Gold
CARBOXYLIC ACID Introduction: Organic compounds containing (–C(O)–OH) as a functional group are called carboxylic acids. The –C (O)-OH group which itself is made up of a carbonyl group (>C=O) and a hydroxyl group (-OH) is called a carboxyl group (carb from carbonyl and oxyl from hydroxyl group). Carboxylic acid may be an aliphatic or an aromatic depending upon whether –C–OH is attached to an alkyl group ( or a hydrogen atom) or an aryl group. Their general formulas are; ALIPHATIC CARBOXYLIC ACID: R–C
Premium Alcohol Carboxylic acid Functional group