Aluminum Alloys have a lower temperature range than copper alloys. Melting points of Copper Alloys (including bronzes, pure copper, and brass) are lower than iron, at ranges around 1,675-1,981☏ / 913-1,082☌. The melting point of iron alloys and the melting point of steel, occur at higher temperatures, around 2,200-2,500 Fahrenheit (☏) / 1,205-1,370 Celsius (☌). If you’re trying to melt metal or expose the metal to high heat, you’ll want to be aware of the melting point for the specific material you are using. Depending on the project or end-use, the melting point can have a huge impact on your result. One of our most commonly asked questions is about the melting point of metals. Use your own knowledge and the data in table 1 to compare the chemical and physical properties of transition elements and group 1 elements.Date Published: 3/21/22 | Last Updated: 3/07/23 Some of the properties of two transition elements and two group 1 elements are shown in table 1. In the periodic table, the transition elements and group 1 elements are metals. sodium more vigorous/more effervescence/moves faster.produce alkaline solution/solution with pH greater than 7/add named indicator to the solution and correct colour change.produce (metal) hydroxide/LiOH and NaOH.Your answer can include any of the following: Sample question 1 - Foundation Questionĭescribe the structure of an atom, including properties of its subatomic particles. These questions have been written by Bitesize consultants as suggestions to the types of questions that may appear in an exam paper. You do not usually need to include all of them to gain six marks, but you do need to write in sentences, linking them logically and clearly. The answers shown here give marking points as bullet points. For example, a question about fertilisers could include ideas about covalent substances, acids and alkalis, chemical calculations, and effects on the environment. Six-mark questions may be synoptic questions, which bring together ideas from two or more topics. You must then complete your answer with a conclusion, stating which is better and why, for example. Evaluate means you must use information supplied, or your own knowledge, to consider the evidence for and against or to identify strengths and weaknesses. Do not just write about X only or Y only. If you are asked to compare X and Y, write down something about X and something about Y, and give a comparison.
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