compounds conduct electricity as: (3 points) Link: http://antoine.frostburg.edu/chem/senese/101/compounds/faq/print-properties-ionic-vs-covalent.shtml Solids? No Liquids? Yes Aqueous solutions (when the ionic compounds are dissolved in water)? Yes Do covalent compounds conduct electricity as: (3 points) Solids? no Liquids? No Aqueous solutions (when the covalent compounds are dissolved in water)? No Substance Melting
Free Ionic bond Chemical bond Covalent bond
“Salt”. DO not add anything to the third cup. Mark that cup “Control.” Cover the three cups and store them in a warm place. 3. Observe the cups after two‚ three‚ and four days. Compare how clear the liquid is in different cups. 4. Which cup has the clearest liquid? Which cup has the cloudiest liquid? Record
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Chemistry Chapter 13 Outline Condensed phases: the liquid and solid phases; phases in which particles interact strongly. 13.1 Gas condensed when cooled and compressed. In the liquid state the forces of attraction among particles are great enough that disordered clustering occurs. It is hard to compress a liquid. Liquids diffuse into other liquids with which they are misicible. The natural diffusion rate is slow at normal temperatures. Cooling a liquid lowers its molecular kinetic energy. Solidification
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E:\CC_Software\Workbench\CC-MW-CD\part2\phasechange\page3.cml 1. Record the average number of dashed lines there are per atom of each liquid. the average number of dashed lines are 3-4 per atom 2. Describe the motion of atoms and molecules in a liquid. the atoms are tight and compact‚ they bounce off of each other. they generally dont leave a certain section of the liquid‚ and stay in the same area. 3. How far do the atoms in a liquid appear to travel? Press the "Randomly pick an atom and show its trajectory" button‚ take a snapshot
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muslin. Liquid: Put 1 cm3 of the liquid food sample into test tubes. -grease spot test: A drop of liquid food sample was added to a filter paper and was let to dry for 5 minutes. The filter paper was held up to the light and any translucent spot was observed. The filter paper was put into an organic solvent. it was taken out and let to dry The filter paper was examine against light again. (positive result – translucent spot disappears) -Clinistix paper: A drop of liquid food
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objects with different amount of density and put them each in ten cups of water. I then put in teaspoons of water and recorded whether or not the objects floated until all the objects were floating. I was able to see how an objects density affects how much salt is needed to make it float. Page 2 Introduction/ Research When trying to make an object float it depends on its density. Density is the “mass per unit volume.”[7] An object floats if it has less density then water. Objects like a boat
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Taste/odour masking Potentially good bioavailability Liquid filled capsules –Advantages 1. Dose Uniformity In a powder capsule for potent drug choice the problems are achieving homogenous mix at the required scale of scrutiny. To overcome this problem we could formulate as a solution; 100% homogenous. Filling liquids also avoids problems of poor powder flow; if this occurs during filling‚ can lead to variation of fill weight. (with a liquid‚cV< 1% possible) . 2. Patient safety compliance/consumer
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improves‚ the colloid component increases and the cohesive force rises. Soluble glass solution can be mixed with water in any proportion. Different amount of water will lead to solutions of different density and viscosity. For the soluble glass solutions with the same module‚ the higher the density is‚ the stronger the cohesive force is. If urea is added into soluble glass‚ its cohesive force can be improved without modifying the viscosity. Soluble glass also has strong acid corrosion that can resist
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Filtration is a mechanical or physical process to separate solid particulates from fluids Filtration is a technique used to separate a solid from a liquid. The solid is separated from the liquid phase by passing the mixture over a filtering media. Filtering media is characterized by being chemically inert to the mixture‚ and having small pathways for the liquid to pass through‚ but these pathways should be smaller than the solid particle size. Filtering media can be prepared using paper‚ fritted-glass
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THE OSMOREGULATORY ABILITY IN PHASCOLOSOMA LURCA AND UCA COARCTATA Abstract Phascolosoma lurca (P. lurca) and Uca coarctata (U. coarctata) species and their organs were examined and studied to determine their osmoregulatory ability using the density of extracellular fluid (ECF) as a measure of ionic and osmotic concentration. Body fluids are denser than water which has a specific gravity of 1‚ plus solutes. Through the examination of the two organisms‚ P. lurca is an osmoconformer and U. coactarta
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