membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random‚ constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other. The random movement of molecules from an area of high concentration to low is called diffusion. Osmosis‚ a specific kind of diffusion with respect to water takes
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Bio 1610 Vocabulary Words CH 1-4 CH 1 Emergent Properties- The greater good‚ bike parts in a box = useless‚ put them together = useful. Systems Biology- Using data to predict the function or result of an affect or variable has on a biological system. Biosphere- The earths atmosphere‚ the earths crust‚ the life in the ocean etc. Ecosystem- A community of organisms and their physical environment‚ ie- the dessert‚ a coral reef‚ a jungle etc. Community- All of the groups of animals or
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a readox reaction to occur‚ special apparatus called voltaic cell can be used. It is made by connecting a voltmeter between two electrodes‚ which are immersed in to the two different solutions separated by porous barrier. This barrier allows flow of ions‚ so that the voltage or potential can be measured. In a closer look of such reactions‚ it can be determined that the sum of the potentials of oxidation and reduction is actually the voltage of the whole voltaic cell. For convenience negative electrode
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Shinhye Lee Chem101 4.16 Specify what ions are present upon dissolving each of the following substances in water: a) MgI2(aq) -> Mg 2+ (aq) +2OH-(aq) b) Al(NO3)3(aq) -> Al3+(aq)+3NO3- (aq) c) HCLO4(aq) -> H+ (aq) + ClO4- (aq) d) NaCH3COO(aq) ->Na + (aq) + CH3COO-(aq) 4.22) In each reaction‚ the precipitate is in bold type. a) Ni(NO3)2 (aq) +2NaOH (aq) ->+2NaNO3(aq) + NiOH2 (s) b )No precipate‚ therefore‚ no reaction. c) Na2S(aq) + CuCH3COO (aq) -> CuS(s) + 2NaCH3COO
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a balanced oxidation/reduction reaction between iodine‚ hydrogen‚ and bromate ion occurs. The above reaction occurs slowly so we used a coupled iodine clock reaction to measure the rate of the oxidation/reduction reaction because it occurs much faster but is still dependent upon the other reaction. To accomplish this‚ two mixtures were prepared in separate Erlenmeyer flasks. In the 250 ml flask .010M potassium iodide‚ .0010M Sodium thiosulfate and distilled water was prepared. A 125 ml flask was
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adding chemicals * Uranium has 20 million Calories per gram * Power is the rate of energy delivery and can be measured in Cal/sec or in watts * 1 hp = 1 kW * Large nuclear plants can create electricity with a power of about 1 GW * Kinetic energy is the energy of motion * To have the same energy as TNT‚ a rock has to move at about 1.5 miles per second * The rock that hit the earth was moving about 15 miles per second (100x energy of TNT) Chapter 2 * Atoms are about 10-8
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CHAPTER 1 EVOLUTION- the process of change that has transformed life on Earth BIOLOGY- scientific study of life EMERGENT PROPERTIES- result from the arrangement and interaction of parts within a system SYSTEMS BIOLOGY- constructs models for the dynamic behavior of whole biological systems EUKARYOTIC CELL- has membrane enclosed organelles‚ the largest of which is usually the nucleus PROKARYOTIC CELL- simpler and smaller‚ does not contain nucleus or other membrane enclosed organelles DNA- (Deoxyribonucleic
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Topic 4 - Bonding 4.1 Ionic bonds 4.1.1 Ionic bond: +ve (cations) and -ve (anions) ions are attracted to each other and form a continuous ionic lattice 4.1.2 Group 1 metals form +1 ions‚ group 2 metals form +2 ions‚ metals in group 3 form +3 ions . Examples : Li+‚ Mg2+‚ Al3+. Greater ease of ionisation Li->Cs is due to the increased electron shielding of the nuclear attraction caused by additional inner shells of electrons. The easier atoms are to ionise‚ the more reactive they
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with the oxidation of ascorbic acid by iodine. Iodine is relatively insoluble‚ but this can be improved by complexing the iodine with iodide to form triiodide: I2 + I- I3- Triiodide oxidizes vitamin C to form dehydroascorbic acid: C6H8O6 + I3- + H2O --> C6H6O6 + 3I- + 2H+ As long as vitamin C is present in the solution‚ the triiodide is converted to the iodide ion very quickly. Howevever‚ when the all the vitamin C is oxidized‚ iodine and triiodide will be present‚ which react with starch to form
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List of Chemistry Terms used in daily life α (alpha)‚ β (beta) α- (β-‚ γ-) ray spectrometer α-addition (alpha-addition) α-cleavage (alpha-cleavage) α-decay (alpha-decay) α-effect α-elimination α-expulsion in photochemistry α-oxo carbenes α-particle (alpha-particle) ’A’ value -factorquantity ab initio quantum mechanical methods abatement in atmospheric chemistry abeo- abiological abiotic abiotic transformation absolute activation analysis absolute activity‚ quantity absolute
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