Identify and describe procedures that can be used to separate naturally occurring mixtures of: * Solids of different sizes: Sieving to separate larger solids from the smaller. * Solids and liquids: filtration * Dissolved solids in liquids: Evaporation to remove liquid from solids * Liquids: * Gases: | * | * | * Assess separation techniques for their suitability in separating examples of earth materials‚ identifying the differences in properties which enable these
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must reach 41°F/5°C or below within an additional four hours‚ for a total cooling time of six hours. The proper way to cool hot liquids is to place them in a metal container in an ice water bath that reaches the same level as the liquid inside the container. Stir the liquid in the container frequently so that the warmer liquid at the center mixes with the cooler liquid at the outside edges of the container‚ bringing the overall temperature down more rapidly. Semisolid and solid foods should be refrigerated
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b. Solvent: A liquid substance capable of dissolving other substances c. Mixture: a substance consisting of two or more substance mixed together d. Solution: A homogeneous mixture of two or more substances e. Emulsion: a colloid in which both phases are liquids f. Suspension: a mixture in which fine particles are suspended in a fluid where they are supported g. Colloidal dispersion: a colloid that has continuous liquid phase in which a solid is suspended in a liquid. 5. How do
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empty spaces into the middle of these hexagons‚ the ice takes up more space than the same amount of liquid water. The net result is approximately 9% more volume. The disadvantages of this peculiar property are many. For example‚ if a container holding water is made of something rigid‚ like metal or glass‚ will most likely break or crack. This is why pipes can be broken during the winter. If some liquid water gets into a small crack in asphalt‚ concrete‚ or brick‚ the crack will be pushed apart and
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“Hydraulic Fracturing or Fracking is a process in which fractures in rocks below the earth’s surface are opened and widened by injecting chemicals and liquids at high pressure”(Dictionary). This type of mining is used to extract natural gas and oil by drilling a mile or more below the surface. Fracking has been “commercially used for 65 years”(Introduction)‚ supplying Americans energy. Hydraulic Fracturing has allowed for the increase in supplies of oil and natural gas. It is currently the best and
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CHEMISTRY. 1. Evaporation of a liquid can take place a)At its boiling point b) Below its boiling point c) At all temperatures d) At a fixed temperature 2.Evaporation of water will increase with a) addition of a solute to it b) decrease in temperature c) increase in temperature d)less surface area 3.Diffusion is faster in the case of a)Oxygen b) nitrogen c) hydrogen d) Carbon dioxide 4.During evaporation‚ particles of a liquid change to vapours only: a)from the
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used to separate magnetic substances from waste water. Filtration is a technique that will separate a solid that has not yet dissolved in a liquid. Take a mixture of a solid and liquid and run it through a filter‚ the liquid will pass through the filter and you will be left with the sold. The filter has little holes in it that are small enough to only let liquid through. Filtration is not a technique to separate solids‚ separating solids like that is called sifting. Example of filtration includes your
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space‚ has a mass‚ exists in 3 physical states namely solids‚ liquids & gases; composed of particles. Solid: have fixed shape‚ fixed volume. Liquid: takes shape of part of container below liquid level. No fixed shape‚ has fixed volume‚ flow easily. Gas: when collected into vessels occupies all space inside vessel‚ takes shape of container‚ no fixed shape or volume. Arrangement of particles in solids‚ liquids & gases • Attractive force among particles strongest in solid
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DETERMINING A LIQUID ’S VISCOSITY USING MARBLES An Investigatory and Exploratory Project In Partial Fulfillment of The Requirements in Chemistry ABSTRACT The project is all about viscosity. Viscosity is a very important quality of liquids that scientists‚ engineers‚ and even doctors are frequently trying to measure and change. It is difficult‚ for example‚ to transport highly viscous crude oil through offshore pipelines‚ so scientists and engineers
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Pineapple (Ananas comosus) Skin Extract as Component in Making a Moisturizing Soap A Research Project III By: Alfajardo‚ Jessa N. Alforque‚ Bliss L. III-Science Class Submitted to: Ms. Dinna Carangue Research I Adviser CHAPTER 1 The Problem and its Scope Rationale: Cleanliness is necessary to everyone. It affects the people‚ the community and their environment. It is a contributing factor that leads to the goodness of one’s health for a better and safe environment for a healthy
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