Reactivity of Mg and Ca Essay Example for Free

Reactivity of Mg and Ca Essay Introduction The aim of this practical is to observe the difference in the reactivity between Mg and Ca when hot and cold water is added. Hypothesis We think they will react in some kind of form. Variables The independent variable was the temperature of the water and also the quantity of metal use in the experiment and the dependent variable was the reaction. Equipment * Mg (s) * Ca (s) * Phenolphthalein * Beaker * Cold and hot water * Sandpaper * Test tubes with rack Procedure 1. The Magnesium was cleaned with sandpaper. 2. Two pieces of magnesium was put into two test tubes and two pieces of calcium was put into two test tubes. 3. Cold water was added into two test tubes one with calcium one with magnesium. 4. Two droplets of phenolphalein were added in each of the test tubes filled with cold water to observe the change in ph. 5. Water was heated over a Benson burner and poured into the two test tubes without water while observing the reactions. 6. Two droplets of phenolphalein were added in each of the test tubes filled with cold water to observe the change in ph. Observation Relative reactivity of Cold water Hot water Mg There was a minimum reaction. Fig. 1 There is a bigger reaction than with the cold water. Fig. 2 Ca The temperature of the water increases right away. Before we dropped the phenolphthalein the solution was white, fig.3, but after adding the phenolphthalein it turned pink, fig.4, which means that the reaction is basic. The temperature stayed the same but because the water was hot the reaction was more explosive and quicker. Before the phenolphthalein the solution was white, fig.3, and after dropping the phenolphthalein it turned pink, fig.4, which means that is a basic solution. Results Are your results in accordance with what you have learned about reactivity? Yes because calcium has more orbits the atom has the less energy it needs to give away electrons. In this case the atom that has more orbits is the calcium that is why it reacts more than the magnesium because calcium needs less energy to give electrons away. And the magnesium didnt react much because it needs more energy that the one that we gave it. Write the balanced equation for the reaction between Mg and H2O: Mg (s) + H2O (l) MgO (s) + H2 (g) Uncertainties Other element might have been present. The hot water might have been heated more. Conclusion We learned that both magnesium and calcium is basic solutions because of the pink tint to the color. We also learned that calcium reacted faster than magnesium.

Tragedy at Texas A&M University :: essays research papers

Tragedy at Texas A&M University Texas A&M University and the University of Texas have been rivals for over 90 years. Every year Texas A&M held an annual bonfire tradition which attracts thousands of people. It is a tradition for Texas A& M to build a huge bonfire right before the game against rivals with University of Texas. Students would spend several weeks building the bonfire. On November 18, 1999 the stack of logs collapsed over and killed 12 A&M students. The aggie bonfire tradition would never again be the same. In US News, the article â€Å"A Tragedy at Texas A& M†, tells how the logs broke in half killing 12 students. On Thursday of November 18, 1999, early that morning the students started working on stacks of logs from the previous days. Students at A & M were very proud of this historical event. The students would gather one week and start to create the bonfire together. But little did they know this would turn into a tragedy. Early morning around 2:30am the logs were thrown everywhere including the students that were working on it that night. About 70 students were at the top of the logs when it suddenly gave way. At least nine killed in collapse of A&M towering, 40-feet pyramid of logs trembled and then came roaring down early Thursday, crushing at least nice students to death and injuring 28 others. At least four of the injured were in critical condition and two people could be seen trapped in the rubble late Thursday afternoon. Rescuers couldn’t tell if they were died or alive. Rescuers had to use sound-detection equipment to listen for moaning, tapping and heard scratching noises that led them to believe there were victims trapped. In Time magazine, the article â€Å"A Good Time Goes Bad†, explains, how a junior at Texas A& M University, embarked this fall on a rite of passages that began in 1909. Fernando Shaun was an eye- witness to this tragedy late that night. The week before the accident Fernando would help cut the wood and load the trucks. He worked hard around the clock to build the wooden tower. At 2:28am is when he saw the 44-ft tall tower fall to the ground. After 24 hours the rescue workers had found 12 dead bodies and 28 were injured. The people began to question, why did the tower fall?

Bretagne France Essay

Bretagne is found along France’s northern shore. Bretagne is also called Brittany and sometimes referred to as little Britain. It is a land of enchantment and wonders. It features rugged coastlines with some of the world’s most breathtaking views. It features more than 4,000 castles and medieval homes. It’s an ideal destination for water sports enthusiasts, lovers of fine cuisine and seafood, and anyone fascinated by legends and history. The attractions, weather and scenery, and the festivals are what attract people the most. This region is full of numerous world-class museums and historic attractions. One of the best places to visit while in Brittany is Oceanopolis. It features 50 aquariums from tropical and polar species. The cathedral of St. Pierre and St. Paul is one of the last Gothic French cathedrals. The chateau de Combourg is a beautiful castle surrounded by greenery and water. The Grand Phare or Great Lighthouse is also a great place to visit, being 300 feet high. And finally the musee de la Faience is devoted to the famous pottery. Other fun things to do are outdoor water sports, including sailing, kayaking, surfing and scuba diving. Spa seawater treatments are also available for relaxing purposes. Being close to the ocean, the weather is fairly nice and warm year round. Rain occurs regularly which keeps the countryside green and wooded. Although it rains often, cloudless days are common and sunny in Brittany. In Brittany a common expression and response to people complaining about the rain is â€Å"En Bretagne, il ne pleut que sur les cons†, which literally translates as â€Å"In Brittany, it only rains on the idiots. â€Å"This means that if you don’t like Brittany, you should leave. Brittany has many festivals and events. They reflect Brittany’s culture and energetic music and dance. Some cultural festivals include the festival de Cornouaille, which is a festival that displays Brittany’s cultural diversity. Les Filets Bleus celebrates fishing traditions and the Festival du Film Britanniqu previews British films in France. Music festivals are also popular in France. Astropolis is a techno music themed festival celebrated in July. La Route du Rock plays pop and rock music. Les Transmusicales is known for showing brand new acts for undiscovered bands. They also have a festival all about activities dealing with the sea. The Fetes Maritimes de Brest is a sailing event that takes place every four years. The next race happens in July of 2012. La Route du Rhum is a transatlantic yacht race which also takes place every four years. The next race will be in November of 2014. Bretagne is a beautiful, fascinating mix of spectacular coastlines, ancient towns, magical islands and inland woods. With so many attractions and activities you will never get bored. The scenery and weather is unforgettably amazing. The festivals attract many tourists and French people to the area.

Ivory Trade Catastrophe The Impacts of Elephant Poaching - Free Essay Example

Sample details Pages: 3 Words: 911 Downloads: 7 Date added: 2019/08/15 Category Society Essay Level High school Tags: Animal Poaching Essay Did you like this example? Many people may not know where a few everyday things such as piano keys, billiard balls, and identification chops come from; its actually Ivory. Ivory is the whitish colored substance that makes up the tusks of elephants. But in order for humans to acquire this material, they have to poach elephants and remove the tusks, which has led to endangerment of the elephant species in more recent years; especially in Africa. Don’t waste time! Our writers will create an original "Ivory Trade Catastrophe The Impacts of Elephant Poaching" essay for you Create order Despite the 1989 ban put on poaching elephants for their ivory, (Wikipedia) hunters still continue to do it illegally, desperate to continue selling it. These actions will come out to negative consequences because elephants are important to their environment. Elephant population is rapidly declining and its important we stop this, so we dont lose a vital part of Africas ecosystem. Some may ask, what is the cause of this economic conflict?   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   To begin, there are many factors that contribute to elephant poaching. Ivory has been considered a valuable material for hundreds of years, even in todays society its purchased frequently. The illegal trade continues due to high demand that mirrors Asias economic growth. (birds.Cornell.edu) over the course of the 1990s to 2007, the price has increased by $750 per kilogram. Many people sell and or trade ivory due to poverty. Poverty is the state of being extremely poor, so people have to resort to other methods of acquiring money. Since selling ivory provides an income source, many people will kill elephants to get it, in desperation to obtain wealth. This is causing a rapid decline in the elephant population. Its an effective method, simply not an ethical one. As of 2017, the price was around $730 per kilogram, according to a report by two ivory trade experts (phys.org). These selfish acts can lead to significantly disastrous outcomes not only for the ele phants, but for the environment and the people in the areas as well.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Consequently, elephant poaching could be linked to many future issues in Africa. One growing problem is of course, extinction of the elephants in general. In 1930, there were between 5 and 10 million African elephants. By 1989, there were about 600,000 remaining, less than one percent of their original number. (birds.Cornell.edu) This causes disturbances in the food chain. They play a vital role in the food chain, being one of the primary consumers. Elephants as well as rhinos are herbivores. Without elephants, tigers would have one less food source. This also affects the social structure of a community, as poachers tend to kill the adult elephants. This leaves calves with no sense of water source or direction for migration routes. Similar to drug trafficking, extinction of the elephant population would also cost more environmental damage than most people would think. Contradictory to popular belief, elephants do many things for their environment. One thi ng they do is help shape the landscape. They do this by trampling through forests and undergrowth, which result in clearings that make space for new plant growth. Also, they help spread seeds around that are too big for the wind or smaller animals to carry. Furthermore, they dig water holes in dry river beds that other animals can use as a water source. A third effect of ivory poaching is an economic downgrade in some regions of Africa. Theyre popular in the tourist community, therefore, bringing lots of money to different areas in Africa. Ivory poaching would have a significant effect on the environment, the animals around, and some humans. Some volunteers and wildlife experts are attempting to eliminate the cause of this conflict.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   On the other side of the spectrum, there are people who are against ivory poaching. Not only are they against it, but theyre willing to do something to make a change. There are a few courses of action theyre taking to protect the elephant species. Essentially, we could boycott the ivory industry. By refusing to buy ivory products, demand would decrease, therefore the poachers would need less supply. By doing this, fewer elephants would need to be poached. People could also avoid going to circuses, seeing as they usually use captured animals, elephants being one of the main, most popular events. Also, not everyone can go out into the world and do things to help the elephants. Something people could do at home is support the organizations that are trying to make changes, by donating money or spreading the word about them. There are many options one could choose from. For example, The International Anti-Poaching Foundation (IAPF), which has been working sinc e 2009 to find solutions to terminate elephant poaching for ivory (Bardroff, Jenna). Lastly, someone could adopt an elephant! It may be a long shot, but it would be one less elephant that would be used for business. It may also raise awareness and prove that people really do care about these animals. By avoiding ivory purchases, raising awareness and supporting change, there are things that ordinary everyday people can do to prevent this global conflict.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   In conclusion, ivory poaching has really taken a toll on Africa. Its become such a problem that its now illegal for citizens of China to buy, sell or trade ivory products, considering they were the biggest ivory consumers (Ebsco). As the population declines, its important that people take action against the poaching for ivory so that we dont lose a valuable species. Earth is simply one big chain of beings who should be coming together to bring peace and hope for a better future, not degrading one another.