The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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2 12 Other sources 13 Table of figures Figure 1. Soap molecules surrounding a layer of water making the film of a bubble 4 Figure 2. The general structure of a soap molecule 5 Figure 3. A table explaining that the sphere has the smallest surface area to volume ratio. 5 Figure 4. A flat interface between two bubble films 6 Figure 5. A cubic bubble film4‚ and a diagram of a wand that could form it2 6 Figure 6. Another cubic bubble film 6 Figure 7. A helical bubble film4‚ and a diagram of
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Exploration Research Question What is the effect of different concentrations of sucrose in a solution on the mass and surface area of a beetroot (Beta Vulgaris) piece? Background The membrane consists of a phospholipid bilayer which is semi permeable. Osmosis is the passive movement of water molecules from an area of high water potential to an area of low water potential across a semi-permeable membrane. It is easy for water molecules to pass through this membrane however solutes that are big in
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The Stone‚ Clay‚ Glass‚ and Concrete Products Industry generates a broad array of products‚ primarily through physical modification of mined materials. The industry includes establishments engaged in the manufacturing of flat glass and other glass products‚ cement‚ structural clay products‚ pottery‚ concrete and gypsum products‚ cut stone‚ abrasive and asbestos products‚ and other products. Under the Stone‚ Clay‚ Glass‚ and Concrete is the Structural Clay industry which will be the primary focus
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increases surface runoff since there is less oppurtunity for rainwater to sink into the ground. .Retarded or supressed infiltration accelerates overland flow production‚hastening delivery of rainwater into streams and rivers‚ the oftentimes the water ends up as floodwater into the ocean‚ especially for an archipelagic country like the Philippines. Forest denudation also deprives recharge of groundwater aquifers since there is less oppurtunity for water to linger in the ground surface to infiltrate
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infer that the ability to absorb increases as you go farther away from a swamp‚ and a group of trees. The ability to absorb also increases based on how much silt is in soil. Introduction In the first article‚ which was a research paper called “Surface runoff and soil water percolation as affected by snow and soil frost” which was written by Holger Johnsson and Lars-Christer Lundin. In the research paper‚ the two discussed an experiment that had been conducted in Sweden. Coupled together‚ a soil
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Environmental impact of mining The environmental impact of mining includes erosion‚ formation of sinkholes‚ loss of biodiversity‚ and contamination of soil‚ groundwater and surface water by chemicals from mining processes. In some cases‚ additional forest logging is done in the vicinity of mines to increase the available room for the storage of the created debris and soil. Besides creating environmental damage‚ the contamination resulting from leakage of chemicals also affect the health of the
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temperature. The network of hydrogen atoms links all the water molecules together which makes it much more difficult to escape. This property gives the water cohesiveness. A drop of water on a polished surface stays intact and hardly wets the surface however a drop of alcohol on the same surface just spreads across it. Relating to the theme the importance of this aspect is to
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efforts to open existing culverted watercourses requiring sustainable drainage systems (SuDS) in new developments the use of Section 106 agreements – from the Town and Country Planning Act – or community infrastructure levy (CIL) to secure suitable surface water drainage arrangements e.g. regional SuDS facilities and improvements to watercourses. Sustainable drainage and the planning process in England The National Planning Policy Framework (NPPF) and its associated technical guidance (that replaced
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Carlisle in a 36 hour period. The constant rainfall increased runoff because soil became saturated‚ this runoff ended up flowing into the river Eden. Because Carlisle is a largely urban area‚ concrete ground made from impermeable materials meant that surface runoff increased. There was a lot of discharge from the River Eden which reached 1520 cumecs. In contrast the Bangladeshi volume of precipitation was much higher so the floods were much worse. Very heavy rainfall amounting to 900mm fell over the
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