A Scene I Will Never Forget Essay Example

A Scene I Will Never Forget Essay Example A Scene I Will Never Forget Essay A Scene I Will Never Forget Essay Have you ever been to wedding that Just makes you want to cry and say I am so happy for you? I did and that was when my sister got married a year ago. This was like a fairytale but even better. As my sister was getting ready for her wedding. My mother was going around taking pictures of everybody that was going to be In her wedding. It was Like everyone was running around like a chicken with their heads cut off. Everyone was doing their hair and make-up and it was as If they did not know which way to go because everyone wanted to look their best In my sisters wedding. Once that part was over with It was time to head out to the Thompson House to have a wedding. When we got their all the bridesmaid and the bride ran upstairs to get there dresses on, so that they could take pictures before the wedding started. All the bridesmaids looked beautiful. I thought that this wedding was going to turn out pretty good. When everyone got to the wedding, it was time to start. The groomsmen walked the parents down the aisle, then it was the ring barrier and the lower girls turn to walk out. After that, it was the bridesmaids and groomsmen turn to walk out. Finally y sister came out she looked gorgeous. The groom looked as if he wanting to cry and his eyes were going to pop right out of his head. Once the I dos where said it was time to catch the bouquet. My sister and my new brother in law had their dance and then my dad and sister had their dance. I loved seeing my sister so happy. It was like fantasy that came right out of a book, but this one was for real. I never thought that a wedding could have made someone cry about something so beautiful and happy. It sure made me do both. Overall the wedding was amazing and I will never forget it happened.

How to Tell If an Element Is Paramagnetic or Diamagnetic

How to Tell If an Element Is Paramagnetic or Diamagnetic Materials may be classified as ferromagnetic, paramagnetic, or diamagnetic based on their response to an external magnetic field. Ferromagnetism is a large effect, often greater than that of the applied magnetic field, that persists even in the absence of an applied magnetic field. Diamagnetism is a property that opposes an applied magnetic field, but its very weak. Paramagnetism is stronger than diamagnetism  but weaker than ferromagnetism. Unlike ferromagnetism, paramagnetism does not persist once the external magnetic field is removed because thermal motion randomizes the ​electron spin orientations. The strength of paramagnetism is proportional to the strength of the applied magnetic field. Paramagnetism occurs because electron orbits form current loops that produce a magnetic field and contribute a magnetic moment. In paramagnetic materials, the magnetic moments of the electrons dont completely cancel each other out. How Diamagnetism Works All materials are diamagnetic. Diamagnetism occurs when orbital electron motion forms tiny current loops, which produce magnetic fields. When an external magnetic field is applied, the current loops align and oppose the magnetic field. Its an atomic variation of Lenzs law, which states induced magnetic fields oppose the change that formed them. If the atoms have a net magnetic moment, the resulting paramagnetism overwhelms the diamagnetism. Diamagnetism is also overwhelmed when long-range ordering of atomic magnetic moments produces ferromagnetism. So paramagnetic materials are also diamagnetic, but because paramagnetism is stronger, that is how they are classified. Its worth noting, any conductor exhibits strong diamagnetism in the presence of a changing magnetic field because circulating currents will oppose magnetic field lines. Also, any superconductor is a perfect diamagnet because there is no resistance to the formation of current loops. You can determine whether the net effect in a sample is diamagnetic or paramagnetic by examining the electron configuration of each element. If the electron subshells are completely filled with electrons, the material will be diamagnetic because the magnetic fields cancel each other out. If the electron subshells are incompletely filled, there will be a magnetic moment and the material will be paramagnetic. Paramagnetic vs Diamagnetic Example Which of the following elements would be expected to be paramagnetic? Diamagnetic? HeBeLiN Solution All of the electrons are spin-paired in diamagnetic elements so their subshells are completed, causing them to be unaffected by magnetic fields. Paramagnetic elements are strongly affected by magnetic fields because their subshells are not completely filled with electrons. To determine whether the elements are paramagnetic or diamagnetic, write out the electron configuration for each element. He: 1s2 subshell is filledBe: 1s22s2 subshell is filledLi: 1s22s1 subshell is not filledN: 1s22s22p3 subshell is not filled Answer Li and N are paramagnetic.He and Be are diamagnetic. The same situation applies to compounds as to elements. If there are unpaired electrons, they will cause an attraction to an applied magnetic field (paramagnetic). If there are no unpaired electrons, there will be no attraction to an applied magnetic field (diamagnetic). An example of a paramagnetic compound would be the coordination complex [Fe(edta)3]2-. An example of a diamagnetic compound would be  NH3.