question is worth 0.2 points. Total assignment is worth 5 points. 1. Describe the characteristics of ionic compounds and of molecular compounds. Ionic compounds have high melting points and conduct electricity well while covalent molecules have lower melting points and will not conduct electricity in a liquid state. 2. What types of particles are present as ionic bonds? Molecular compounds? Ionic bonding occurs between charged particles. These may be atoms or groups of atoms‚ but this discuss
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2005) Once the target has been validated and the company have decided to continue with the development‚ the next process of screening will occur. This primarily involves High Throughput Screening (HTS). This process involves a massive library of compounds tested against the target protein‚ i.e.
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that substance is revealed through a seires of tests that involve chemical and physical properties of that substance. Problem: You are given an unknown chemical substance that you need to be able to identify. How are you going to do this? The compound can be either harmful or toxic‚ so what you need to do is test all of its physical and chemical properties‚ and then find out the synthesis of the substance. Qualitative testing and quantitative testing is essential in discovering what the unknown
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inorganic binders in a pill) behind. Background Caffeine. Caffeine is a heterocyclic (i.e.‚ has atoms other than carbon in a ring) amine found in many plant materials including tealeaves‚ coffee beans‚ kola nuts‚ cocoa beans‚ and guarana seeds. Compounds found in nature are referred to as “natural products” and amine natural products are called alkaloids. Hence‚ caffeine is an alkaloid. Many alkaloids‚ including caffeine‚ have pharmacological effects. Some other examples are morphine‚ codeine‚ cocaine
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CHEMISTRY PRACTICALS CLASS-XII EXPERIMENT No. 1 AIM – (a) To prepare 100ml of M/20 solution of oxalic acid. (b)Using this calculate the molarity and strength of the given KMnO4 solution. APPARATUS AND CHEMICALS REQUIRED- Oxalic acid‚ weighing bottle‚ weight box‚ volumetric flask‚ funnel‚ distilled water‚ chemical balance‚ beakers‚ conical flask‚ funnel‚ burette‚ pipette‚ clamp stand‚ tile‚ dilute H2SO4‚ KMnO4 solution. THEORY- (a) Oxalic
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TLC FULL LAB REPORT Objective: The purpose of this experiment was to identify compounds in a mixture by Rf values and to determine the best solvent to use. Also is the analysis of mixtures before‚ during and separation. Possible solvents: Hexane MW- 86.17 g/mol Hazards-flammable‚ harmful if swallowed Melting pt / boiling pt (degree Celsius) - 69 Density-.6548 g/ml [pic] Methanol MW-32.04 g/mol Hazards- flammable‚ eye irritant Melting pt / boiling pt- 65 Density-.7918 g/ml [pic]
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or lost. Metals will generally form cations or positive ions‚ since they tend to donate electrons Non-metals will form anions or negative ions‚ since they tend to accept electrons. Activity In this activity you will create models of ionic compounds and observe the chemical formula of the binary molecules you have created. Your data will be recorded in a data table or chart‚ similar to the one below. Cation name Anion name Chemical Formula Name Discussion/Conclusion (talk with
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as biostimulation. Biostimulation can be achieved through changes in pH‚ moisture‚ aeration or nutrient addition. DEFINATION:- Biodegradation:- Biodegradation or biological degradation is the phenomenon of biological transformation of organic compounds by living organisms (Microbes). It usually involves the conversion of complex organic molecules to simple and mostly non toxic ones. Bioremediation:- ‘Bio’ means living organisms and ‘remediate’ means to solve a problem. “Bio-remediate” means
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Chromatography Abstract Paper chromatography is one of the methods under chromatography‚ it can use in identifying unknown compounds using known compound and it can also use as a separation technique based on the differences in affinities of components of the mixture to a stationary phase and a mobile phase. In the experiment‚ the stationary phase was the filter paper onto which the dye samples were dropped onto while the mobile phase was the solvent mixture containing ethanol and water which
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The test compounds undergo different physical and chemical tests to differentiate their intrinsic physical properties and chemical properties. Physical state‚ color‚ and odor were noted through simple observation. Miscibility of the test compounds were noted through color change or a warming effect. Flammability was tested by igniting 3-5 drops of the sample in a small evaporating dish. Baeyer’s test and Bromine test were used for tests for active unsaturation. Aromaticity of the compound was determined
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