retaining walls‚ earth dams‚ and airport‚ require man-placed soils‚ or fills. These soils are loose (weak) and must be compacted to increase their strength characteristics. • Soil compaction is defined as the method of mechanically increasing the density of soil by reducing volume of air. 2 General Principles • The densification is accomplished by pressing the soil particles together into a close state of contact with air being expelled from the soil mass in the process‚ thereby increasing
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insoluble solid. 3. Decantation. This separates a liquid from an insoluble solid by carefully pouring the liquid from the solid without disturbing the solid. 4. Filtration. This separates a solid from a liquid through the use of a porous material as a filter. Paper is a good filter. Filters allow the liquid to‚ pass through but not the solid. 5. Evaporation. This is the process of heating a mixture in order to drive off a volatile liquid and make the remaining component dry. The mixture
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(milk) and gas (food coloring) in the respiratory system. Because I know milk is non-polar and food coloring is polar‚ my hypothesis predicts the two will not mix voluntarily at first‚ but the soap acting as a surfactant‚ when added‚ will help the two liquids mix together. Materials (Part on: water surface tension) 1- A penny 2- A dropper 3- Water 4- Paper towels (Part two: surfactant) 1- Milk 2- 2 different color food coloring 3- Dishwashing soap 4- Cotton swab 5- A mall clear dish 6- Timer 7-
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The floating egg experiment – How much salt is needed to make an egg float? Aim: To investigate the effects of salt on the density of water (and therefore the ability to float an object in said water) and to find the amount of salt needed to float one regular egg in a glass of water. Research: Internet research shows that adding salt to water increases the density‚ and in turn makes it easier for objects to float. 4-10 teaspoons of salt in 1 glass of water is said to be enough to make one egg
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Villanueva‚ Justeen Wong Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract This experiment has been divided into 4 set-ups‚ first was the solid-liquid extraction‚ next was the liquid-liquid extraction‚ then the sublimation and last was the melting point determination. The solid-liquid and liquid-liquid extraction were both done during the first meeting‚ the DCM layer was filtered and dried in the evaporating dish and kept inside the locker. The dried was light green‚ somewhat
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many peritectics? ______ How many peritectoids? ______ How many pure metal phase transitions? ______ How many congruent melting points??______ Q.2 a) A 90 wt% Ag-10 wt% Cu alloy is heated to a temperature within the b + liquid phase region. If the Composition of the liquid phase is 85 wt% Ag‚ determine: (a) The temperature of the alloy (b) The composition of the b phase (c) The mass fractions of both phases b) For a copper-silver alloy of composition 25 wt% Ag-75 wt% Cu and at 775°C (1425°F)
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Colorful Sugar Water Density Tower Sick Science! Summer Camp - Cooking up Kitchen science with sugar water (Submit Review) Stay inside and beat the heat or stay dry on a rainy day while testing the density of sugar water. This experiment is perfect kitchen science - it uses materials found in your pantry. We used Steve Spangler Science materials in conducting our experiment. We used four different density mixtures‚ but you can use as many as you want. * Email * * Materials
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Background: This lab is all about finding the density of a candy bar‚ and determining whether or not the candy bar will float or end up sinking in a glass of water. In order to investigate the principles of mass‚ you have to find the volume and density for four different types of candy bars. My question is‚ which candy bar will have the least amount of density? Hypothesis: If a Twix has cookie inside‚ then it will have the least amount of density. Materials: 4 candy bars( Snickers‚ Twix‚ 3
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(¡ÆC) Observation Unmelted White salt First liquid appear point 122 Grainy and shiny white Becoming all liquid 125 Clear B. Melting point of unknown #42 1st trial Temperature (¡ÆC) Observation Unmelted Shiny light yellow crystal First liquid appear point 99 Grainy yellow Becoming all liquid 101 Clear 2nd trial Temperature (¡ÆC) Observation Unmelted Shiny light yellow crystal First liquid appear point 95 Grainy yellow Becoming all liquid 97 Clear C. Melting point of mixture (Unknown
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INTRODUCTION. SOLIDS‚ LIQUIDS AND GASES have properties that are use to describe how they behave‚ e.g. for solids it has a definite shape‚ you can hold a solid rock in your hand. You can push on a solid brick wall. Scientists say a solid is something that has shape. A solid resists any change in its shape. TASKS 2. LOOK AT THE PICTURES BELOW FOR SOLID‚ LIQUID AND GAS AND WRITE DOWN THREE PROPERTIES OF EACH? Wood as a Solid. Solid has a fixed shape Its particles are tightly held together
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