Anthony Martinez Mr. Hruby Chemistry R Period 4(5A) Name & Symbol: Platinum (Pt) Properties: -Atomic Number: 78 -Atomic Mass: 195.084 amu -Appearance: Shiny‚ smooth surface‚ silver like‚ solid. Melting point (K): 2045 Boiling point (K): 4100 Valence electrons: (+1)‚ +2‚ (+3)‚ +4‚ +6 Atomic radius (pm): 139 1st Ionization energy (kJ/mol): 868.1 Electronegativity: 2.28 Natural Occurring Isotopes: Six stable isotopes of platinum occur in nature (190‚ 192‚ 194
Premium Periodic table Transition metal
Chemistry and Society Jessica Yadira Lopez CHM/110 November 10‚ 2014 Jennifer Cruz Chemistry and Society Chemistry plays a huge and important role in society; Society depends on the accuracy and precision of measurements for products sold by the retail industry‚ such as a gallon of gasoline‚ a bushel of corn‚ or a liter of bottled water. These measurements have to be precise and accurate when it this relates to how farmers sell their products such as wheat‚ corn‚ milk‚ peanuts‚ and cotton‚ by
Premium Scientific method Science Theory
Alixandria Zeidel Physics 131 – section LZ Hasbrouck 208 10/01/14 Forces and Newton’s 2nd law Abstract The purpose of this lab was to learn about how force influences acceleration. A hanging mass is tied to a frictionless glider and the mass is dropped. While the glider is being pulled by the mass it is possible to measure to tension force on the rope between the two objects. A motion sensor graphs the movement of the system and from the slope it is possible to calculate the acceleration of both
Premium Force Aerodynamics Mass
Standardize a solution of potassium manganate(VII) by an iron (II) salt (ammonium iron (II) sulphate) Introduction Oxidation numbers describe the number of electrons the atom will gain or lose during a reaction. Each atom in an equation can be assigned an oxidation number according to certain rules. If the oxidation number of an atom increases as you go from the left side to the right side if an equation‚ oxidation has occurred (electrons have been lost); if the oxidation number decreases
Premium Potassium permanganate Manganese Oxidizing agent
Public Law 94-142 is one of these laws that supports students with disabilities being provided an education in a regular school environment that is least restrictive (Exploring Rights of Students with Disabilities). Also included with this law is the Individuals with Disabilities Education Improvement Act of 2004 which is considered as Public Law 108- INDIVIDUAL EDUCATION PLAN 3 446 (Essex‚2012). As well as elements of the laws included in the No Child Left Behind
Premium Education Educational psychology Teacher
Education Higher Tier January 2012 1 2 3 4 5 TOTAL Science B Unit Chemistry C1 CHY1H Chemistry Written Paper Unit Chemistry C1 H Thursday 26 January 2012 You will need no other materials. You may use a calculator. 9.00 am to 9.45 am Time allowed 45 minutes Instructions Use black ink or black ball-point pen. Fill in the boxes at the top of this page. Answer all questions. You must answer the questions in the spaces provided. Do not write outside the box around
Premium Copper Concrete Carbon dioxide
Elisa Hofmeister Kokesh Hour 3 AP Chemistry 5-29-12 The Chemistry of Coffee Green Coffee- Before coffee is roasted‚ it is referred to as “green coffee”. The green coffee is primarily made up of caffeine‚ lipids‚ carbohydrates‚ proteins (amino acids)‚ and organic acids (although inorganic acids exist in coffee as well). These groups are quite stable in the green phase‚ and it is the carbohydrates‚ proteins‚ and acids that will undergo significant reactions during roasting to produce coffee
Premium Acid Carboxylic acid Coffee
Match and Water in a Glass Science Magic Trick Fun Trick with Fire and Water This is a simple and interesting science magic trick involving fire and water. All you need is water‚ a glass‚ a plate‚ and a couple of matches. Pour water into a plate‚ light a match in the center of the dish and cover it with a glass. The water will be drawn into the glass. Match and Water Trick Materials • plate • water • 2 wooden matches • a quarter or other large coin • colored water
Premium Liquid Zinc Match
Everything you need to know about hydrocarbons INTRODUCTION: organic chemistry Organic chemistry is the chemistry of compounds that contain carbon and hydrogen. The element carbon has a special role in chemistry because it bonds with other carbon atoms to give a vast array of molecules. The varity of molecules is so great that we find organic compounds in many common products we use‚ such as gasoline‚ medicines‚ shampoos‚ plastic bottles‚ and perfumes. The food we eat is composed of different
Premium Methane Carbon Hydrocarbon
1.1 Definition Nanochemistry is concerned with generating and altering chemical systems‚ which develop special and often new effects as a result of the laws of the nanoworld. The bases for these are chemically active nanometric units such as supramolecules or nanocrystals. Nanochemistry looks set to make a great deal of progress for a large number of industry sectors. Nanotechnology exists in the realm where many scientific disciplines meet. Achievements in physics are getting progressively
Premium Nanotechnology Chemistry