Metals and Halogens reactions Elements such as fluorine‚ chlorine‚ bromine‚ iodine‚ and astatine belong to Group 7‚ Halogens. At room temperature‚ fluorine is a yellow gas‚ chlorine is a pale green gas‚ bromine is a red liquid‚ and iodine is a purple solid. Astatine is a radioactive element‚ therefore it exists only in small amounts. All the halogens exist in diatomic molecules. They have high ionization energies and are the most electronegative elements. Their electron configuration ns2 np5 make
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complete sentences‚ giving detailed explanations and support for each of your answers. 1. Explain in your own words what it means for a chemical system to be in the state of dynamic equilibrium. After a reaction has occurred for awhile at a given temperature‚ the forward and reverse reaction rate will eventually be equal. Although you may get this confused‚ the concentration may not be equal‚ but the rate will. This occurs in a closed system. In other terms‚ dynamic equilibrium is when no change
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Erin Bolton Chemistry Lab Report April 29‚ 2015 Lab: Reaction Rates Introduction: In this experiment we studied the reaction of potassium persulfate‚ K2S2O8‚ with potassium iodide‚ KI. All chemical reactions have an energy barrier to overcome before the reaction will proceed. We will record data based on the concentration‚ temperature and catalyst for each experiment. Once this has been completed it will be graphed. Procedure: Due to the chemicals being used having hazard gloves are used
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Action – Reaction B: All right‚ I’ll say: how are you all this day of your time‚ as you know time to exist? AUD: Good. Great. Perfect. B: We will begin with questions. Q: I have a question. We have had a physicist in history -- I believe it was Sir Isaac Newton -- he said for each action there is an equal and opposite reaction. Is that true in your culture? B: All right‚ understand‚ first of all‚ there will be many ideas and interpretations along that line‚ as you understand
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The effect of time on enzyme reaction. Abstract: In this lab investigation we will observe how the amount of hydrogen peroxide is affected by catalase over time. The enzyme was added to 10 mL’s of hydrogen peroxide and observed over time to determine the relation between time and enzyme activity. The hypothesis stated that as time increased substrate would decrease. Therefore I predicted that at 60 seconds‚ there would be the least amount of H2O2. The enzyme activity mirrored my predictions
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chemical reaction and relate those reactions to products commonly found in a home environment. Through this experiment someone can macroscopically analyze whether a solution is acidic or base and identify the presence of starches in food. Procedure For each of the combinations of chemicals below put 2 drops of each in their own well in the 96-well plate. Making sure to place only 2 drops of the first chemical then adding only 2 drops of the second chemical the observation of the reaction can be made
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r Lab Report 5 Introduction to the Classes of Chemical Reactions Course: Chem. 1151L‚ Tuesday & Thursday June 23‚ 2011 Mr. Nasir Uddin Pre Lab Questions: 1. CaBr2 (aq) + K3PO4 (aq) → CA(PO4)2(S) + KBr (aq) = Ca3(PO4)2 + 6 KBr Double Replacement 2. Li(s) + O2(g) = Li2O(s) =2 Li2O Decomposition 3. CH4 + O2 = CO2 + H2O = CO2 + 2 H2O Combination 4. AgBr(s) = Ag (s) + Br2(l) = 2 Ag + Br2 Combination 5. Mg(s) + H2SO4 (aq) = MgSO4 + H2
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Student name : Thi Thuy Trang Nguyen Student ID : 17621579 Human reaction timer experiment ruler The goal of this test was to affirm. Students wear glass have slower reaction times than students don’t wear glass. Beginning with the class was divided into three groups‚ two groups of five students and one group of six students. Each group of students got a ruler from teacher and the result table. The ruler was held
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Reaction Paper 1 Reaction Paper 1 The movie is about the responsive brain and the behaving brain. The brain is one of the most dynamic systems on the planet‚ for as much work the brain does and its complexity. It’s amazing how a simple thing like touch can be communicated through emotions. The movie talks about how the touch of a mother affects how a both a healthy baby develops and premature babies. The touch of the mother helps the baby develop with regards to their weight‚ how active they
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English 100-05 5 October 2012 Reactions towards the Homeless In the article “Charity Means You Don’t Pick and Choose‚” Patricia O’Hara talks about many encounters with homeless people. She gives examples of people reacting with kindness‚ indifference‚ and contempt. At the end‚ she determines that people should consistently be kind regardless of circumstances. O’Hara frequently talks about the problem of how people who are doing well in life shouldn’t treat the homeless any different. People
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