1 Ethene may be converted into poly(ethene). What type of reaction is this? (A) Condensation (B) Hydrolysis (C) Oxidation/reduction (D) Polymerisation 2001:1 1 2 You have carried out a first-hand investigation to compare the reactivity of an alkene with its corresponding alkane. (a) State the name of the alkene. 2002:16(a) 1 (b) Outline a procedure to compare the reactivity of this alkene with its corresponding alkane. 2002:16(b) 2 (c) Describe the
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Name____________________________ Pd. _______ Purpose: The purpose of this lab is to look at some properties of three common compounds‚ CO2‚ H2‚ O2. Materials: Zinc Hydrochloric acid Hydrogen peroxide Manganese dioxide Calcium Carbonate (marble chips) Safety:The Hydrochloric acid used in this experiment could cause blindness upon contact with the eyes. Wear your goggles and handle it with care. Procedure: I. Place approximately 0.5 g of
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may increase the actual mass of water in each trial. In the density part‚ the mass and density of zinc electrode was measured and calculated to determine the accuracy of the measurement. The result shows that the densities of zinc electrode in two trials are 6.2±1.6 g/cm3 and 9.4±3.8 g/cm3 (The average density is 7.8±3.8 g/cm3)‚ which is not quite accurate‚ compared to the standard of solid zinc density1 (7.14 g/cm3)1. The random error may result from the reading of volume of water in graduated
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Solution Review Complete all questions in this package. Be careful to use correct significant figures and units for any calculation problems. For all chemical equations use phase subscripts. Concentration 1. Calculate the concentration of the solution formed when 23.61 g of sodium phosphate is dissolved in 475.0 cm3 of water. 2. What volume of water is needed to dissolve 85.8 g of silver nitrate to make a 2.650 M solution? 3. What mass of magnesium sulphate is needed to make 1500
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- When the concentration increases the rate of reaction increases as there are more molecules present‚ therefore there are more collisions between molecules (Collision theory) - Example : zinc reacts fairly slowly with dilute hydrochloric acid but when the acid is concentrated‚ the rate of reaction increases. Catalysts - A catalyst is a substance which speeds
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and iron metal. f. Barium chloride reacts with sodium sulfate to produce barium sulfate and sodium chloride. g. Bismuth (III) oxide and zinc metal react to produce zinc (II) oxide and bismuth metal. h. Calcium metal reacts with phosphorus to produce calcium phosphide. i. The combustion of decane forms water and carbon dioxide. j. A solution of hydrochloric acid reacts with solid calcium bicarbonate to produce water‚ carbon dioxide‚ and calcium chloride. (Note: Carbonic acid decomposes to form
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What is heartburn and when does it occur? Heartburn occurs when hydrochloric acid‚ which is used to digest food in the stomach‚ backs up into the oesophagus causing an irritation. Normally the oesophageal sphincter would close tightly‚ not allowing the acid to back up. If this valve‚ however‚ is not functioning‚ the acid can slip by. Occasionally heartburn can be associated with hiatus hernias. Describe how the heart remedy works‚ including a description of what a neutralisation reaction is
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Properties of Gases CHE101 Experiment date: 06/20 Write-up date: 06/21-06/22 Purpose: The purpose of this experiment is to examine different properties of gases in order to be able to identify them in a laboratory setting. I will be using Hydrochloric acid‚ mossy zinc‚ Bromothymol blue‚ limewater‚ Manganese‚ and Alka Seltzer‚ to test different properties of gases formed by chemical reactions. In order to extract the gas I will use several household products such as vinegar‚ baking soda‚ water‚ and
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Jonah Bluh! Honor’s Chemistry ! Experiment Number 6 ! November 28‚ 2014 ! ! Physical and Chemical Properties! Purpose/Hypothesis:! • The purpose of this experiment is to investigate the chemical and physical properties of pure chemical substances. A property of a substance is some distinguishing characteristic. Some of the most common physical properties are color‚ odor‚ hardness‚ density‚ melting point‚ boiling point‚ and solubility in various solvents. For all of these properties‚ no chemical
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MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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