How To Do the Gallium Beating Heart Demonstration

The gallium beating heart is a chemistry demonstration in which a drop of gallium is made to pulsate, like a beating heart. The gallium beating heart is similar to the mercury beating heart, but gallium is much less toxic, so this demonstration may be preferable. Unlike the mercury beating heart, no iron is required to perform this demo, though the gallium heart beats more slowly. Although performing the demonstration is fairly straightforward, it can be tricky to add the proper proportions and correct amount of dichromate to get the gallium to pulsate. For this reason, start with a small amount of the chemical and add more as needed. Materials Needed Drop of gallium metal, liquefied (apply heat, as from your gloved hand)Dilute sulfuric acid (for example, battery acid)Potassium dichromateWatch glass or petri dish Directions Place a drop of liquid gallium in a shallow dish.Cover the gallium with dilute sulfuric acid. The drop will round into a ball as gallium sulfate forms on the surface of the drop.Add a small amount of potassium dichromate. The gallium will relax somewhat as the sulfate layer is removed and the surface tension of the drop changes. If the proportion of dichromate with respect to the sulfuric acid is just right, the drop will alternate between round and relaxed, like a beating heart.

Racial Discrimination And Discrimination - 1795 Words

Racial discrimination is the practice of letting a persons race or skin color unfairly become a factor when deciding who receives a job, promotion, or other employment benefit. It most often affects minority individuals who feel they have been unfairly discriminated against in favor of a Caucasian (or white) individual, but there have been recent cases where whites have claimed that reverse discrimination has occurred—that is, the minority received unfairly favorable treatment Court rulings handed down through the years have determined that a companys The study Written during a tumultuous period in American history when many people expected the federal government to right social wrongs, the law was a monumental piece of legislation that†¦show more content†¦It is important to note thatthe United Nations has declared that racial discrimination and ethnicity discrimination are one and the same. Significantly, the partition of races can be traced back in history as early societies have traditionally divided human populations based on their race. As such, through the centuries sociologists, anthropologist and psychologists have tried to determine the root cause of racism especially with the detrimental effects of discrimination as a result of racist beliefs. Thus, the effects of racism continues to be a prevailing problem. It has been the cause of wars and conflicts throughout human history however, the question remains whether racism is inherent to a person’s genetic makeup or whether it is a learned behavior. This paper will evaluate the different theories and studies on racism to explore whether racism is actually a learned behavior or not. More importantly, it will investigate theories to real life scenarios to determine if racism is learned or inherited. In order to answer the problem statement whether racism is a learned behavior or not. It is first important to define learned behavior. According to psychologists and sociologists, learn ed behaviors are a product of a person’s observation. The application of the learning is because the person has deduced that this behavior provides personal benefits. As such, learnedShow MoreRelatedRacial Discrimination Is Becoming A Larger Problem1771 Words   |  8 Pages Racial discrimination is when a person is treated less favorably than another person in a similar situation because of their race, color, national decent, ethnic origin or immigrant status (Know Your Rights: Racial Discrimination and Vilification). Racial discrimination has always been a problem, as shown in the article A Letter to My Nephew from the stimulus packet. However, as time goes by different forms of discrimination have branched out and become popular. Racial discrimination is blatantlyRead MoreRacial Discrimination And Its Effects On American Culture970 Words   |  4 PagesIf there is one thing I have noticed during my, admittedly, short sixteen years, it is the racial discrimination and obv ious bigotry of the those who are not white. Stereotypes and detrimental comments are slung every which way. Others, rely on subtle jabs while some are oblivious to the offense of the people they are around. It seems to me, that people do not seem to care. I have listened to countless conversations where people would nonchalantly insult their own culture and heritage as if theyRead MoreRacial Discrimination And Discrimination899 Words   |  4 PagesDiscrimination has been in occurrence in our society more definitively in the past few decades, compared to before the sixteenth century, when the ancient world was so small that physical differences of people went unnoticed (Cashmere and Jennings, page #). 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In turn, this gap makes it increasingly difficult to communicate and understand one another. Furthermore, division lead s to discrimination and segregation which ultimately leads to a racial based power dynamic, which emphasizes the gap. In this way, when reacting to systemic racism, individuals must be aware that unintentional racism exists and that unintentional racists might be attempting to help, but inRead MoreRacial Discrimination : Racism And Discrimination1244 Words   |  5 PagesRacial discrimination has been an ugly face lingering around for generations. It baffles me how it still exists today. It’s interesting to me because how do you know who to discriminate against. What type of individual will promote such distasteful thoughts? Why is racial discrimination still relevant? I guess the real question will be is how to overcome racial discrimination. The beginning of racial discrimination stems from when the European settlers landed in America and conquered the NativeRead MoreRacial Discrimination And Gender Discrimination962 Words   |  4 Pagesincreasingly being seen, especially on social media. It s a single word which people are using instead of the longer phrases disability discrimination or disability prejudice. Racial discrimination and gender discrimination have their own single words - racism and sexism - and so those ideas can be expressed a little more easily. Disability discrimination is often complicated and misunderstood. At one end of the scale, buildings with steps instead of ramps may be said to be ableist. Less obviousRead MoreRacial Discrimination1110 Words   |  5 Pages There are many problems that America faces today; however, one of the most prominent is racial discrimination. Racial discrimination is one of the leading causes of riots and protests that occur in America. There are also many different opinions as to what is racial discrimination and what is not. Many people believe that the murder of someone of a particular race is linked to discrimination while others would disagree. It is important to find a resolution to this issue because it is a growingRead MoreRacial Discrimination1853 Words   |  8 PagesRacial discrimination is the distinction, restriction, preference or exclusion that is based on colour, race, ethnic origin, descent or nationality with a purpose of impairing the recognition, enjoyment of human rights and the fundamental freedoms (Anon., 2012). It is unlawful according to the Australian hotels association (AHA) and the tourism accommodation Australia (TAA) to discriminate against anyone by treating them unfairly compared to others or harassing them because of their sex, race (colourRead MoreRacial Discrimination858 Words   |  4 PagesResearch topic: Does racial discrimination cause poverty among black people in America? The scene of ghettosThe with poor living conditions of the ghettos in whichwhere black people live is not uncommon., Iit actually manifests a larger picture of racial discrimination which is closely related to poverty. Racial discrimination is about the pre-conceived notion that black people are inferior; they are more prone to violence and totally relianty on social welfare to survive. As a result of these

The CBD of Bangor Free Essays

This is a project based on how Bangor changes as you move towards or away from the centre of the town. To investigate this as a group we have formed four questions; we will answer these with evidence and explain the method in which we obtained the results. Using this evidence I will compare and analyse to delimit the CBD (Central Business District) of Bangor. We will write a custom essay sample on The CBD of Bangor or any similar topic only for you Order Now The Four Hypotheses: 1. Is there a district change in functions at the edge of the CBD? 2. Do building heights increase towards the centre of the CBD? 3. Are rateable values highest at the centre of the town? 4. Do pedestrian counts decrease from the centre of the town outwards? Basic Method: Access: I will use a planned route to find my results. As Bangor is generally small and close to Bangor Grammar School I shall cover my route by walking. Equipment: I will carry with me a pencil with a rubber on the end, as it is easy to correct things if I make a mistake. I will also bring a clipboard, file block, and a plastic pocket so as my work will not get wet. Safety: I will remember to take care with traffic and bring a mobile phone in case of emergency. How to cite The CBD of Bangor, Papers