Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to not-so-shiny strips that are stained with dark‚ reddish-brown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after
Premium Oxygen Carbon dioxide Sodium bicarbonate
Badlands National Park Badlands national park is located in high Great Plains of southwestern South Dakota east of the Black Hills. The parks highest elevation is 3282 ft on Sheep Mountain; the lowest elevation is 2460 ft along Sage Creek. The park is nearly 244‚000 acres and covered with sharply eroded buttes‚ surrounded by a mixture of grass prairie. Some of the major geologic attractions are the stunning landscape and the wildlife it quarters. The geologic origin of the park reveals that
Premium Sedimentary rock Mammal Fossil
towns that struggle to fund restoration efforts or general upkeep for these sites. With newer and larger parks established in the local community today‚ Selden Park is often overlooked or disregarded by the citizens of Brunswick‚ Georgia‚ but it has a rich history that shaped the development of coastal Georgia’s African American community‚ going back to the turn of the 20th century. Selden Park started as a place of education for African American’s in the region‚ who following the abolition of slavery
Premium African American Black people American Civil War
CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced
Free Chemical reaction Hydrogen Nitrogen
complex reactions and reaction sequences‚ where raw materials react together to give the product. Such chemical process often releases energy‚ in the form of heat‚ and the reaction is described as exothermic. Many of these reactions may also evolve gases at high rates‚ and could cause reactor over-pressure. Thermal runaway reaction Runaway reactions are thermally unstable reactions where the heat of reaction can raise the temperature of the reactants sufficiently to accelerate the reaction rate out
Premium Chemical reaction Bhopal disaster
long journey beginning with a simple act‚ and ending with a enduring march. One women conquered discrimination against all odds. Rosa Parks is one supporter of the Civil rights movement‚ and even was the one to start the historic time. Rosa Parks embodies the characteristics of an epic hero because she had courage and strength‚ humility‚ and national heroism. Rosa Parks shoes great courage and strength when she stands up for herself on the bus. She was even arrested and sent to jail for her actions
Premium Black people African American Rosa Parks
Elimination Reactions ________________________________________ As described previously‚ primary alkyl halides generally undergo substitution reactions with simple nucleophiles by an SN2 mechanism. Secondary alkyl halides‚ often react with simple basic nucleophiles to give a mixture of products arising from both substitution and elimination. As with substitution reactions‚ the rate at which elimination reactions proceed can be proportional to both the concentration of the base and the concentration
Premium Organic reaction Alkene
Polymerization reaCTIONS polymers are high-molecular-weight compounds‚ fashioned by the aggregation of many smaller molecules called monomers. Ex. plastics that have so changed society and the natural and synthetic fibers used in clothing are polymers. Classification of polymers Homopolymers - consist of repeated long chains or structures of the same monomer unit. Ex. PVC(polyvinyl chloride) Copolymers - polymers that consist of more than one molecule. Trimers - molecules consisting
Premium
My Reaction to Apollo 13 The movie Apollo13 is great but little kind of boring. Tom Hanks is a great artist! He is my idol. One of his great movie is Forrest Gump. By the way‚ The Apollo13 is America’s third moon landing mission. En route‚ an onboard explosion deprives their spacecraft of most of its oxygen supply and electric power‚ forcing NASA’s flight controllers to abort the Moon landing‚ and turning the mission into a struggle to get the three men home safely. I thought Jim’s wife was his
Premium NASA Moon International Space Station
Amusement Park Operations Manager Introduction A ride host has given you the all clear‚ the train begins to a ascend slowly up the mammoth 200ft steel mountain‚ your heart begins to race‚ you struggle to catch a breath as you are aware of the many twists and turns that are presumed to follow as you creep your way over the ominous peak. Life in many ways can be alluded to the adrenaline rush of racing on a roller-coaster. To experience that rush on a daily basis and you become the driving force
Free Roller coaster Amusement park Management