Question

At Home Lab: Density Introduction: Density I am sure you have carried two full grocery bags to your car and noticed one bag being much heavier. Since the two bags are the same size and one bag has more mass, the heavier bag must be more dense. A non-scientific definition for density is how tightly packed something is. Supplies: • 100ml Graduated Cylinder • Corn Syrup • Vegetable oil • Tap Water • Food Coloring or Universal Indicator Reasoning: The least dense substance will float atop the more dense substances. I Soil is more dense than water, water is more dense than air, so air is atop water, water is atop soil. You will create a density column and colorize it. Procedure: 1. Record all observations. 2. Pour 20mL of corn syrup into the 100ml graduated cylinder. 3. Slowly pour 20mL of water into the 100ml graduated cylinder. 4. Add 2 drops of food coloring or universal indicator. 5. Slowly pour 20mL of vegetable oil into the 100ml graduated cylinder. 6. Record your observations. Concluding Questions: 1. Explain the order of your fluids. 2. Give an example of a density separation you have in your home? 3. Watch the trailer for the 1999 movie Three Kings. Identify a problem with density. (If you are having trouble with this question ask for a hint.) 4. What are the densities of iron, aluminum, lead, and lithium metals? 5. Explain why a car having a lead battery and a cell phone having lithium battery makes sense. 6. Why are airplanes made mostly of aluminum and cars are made mostly of iron? 7. Compare the densities of gold and helium. Make sure you are using the same units. Does the difference make sense, explain? 8. How is it that an aircraft Carrier that is made mostly of iron can float on water?

Answer 1

I am giving the solution of this question on paper.

Page no-ol) 100 ml Craduated Cylinder, Cosen Byreup, Vegetable oil, tap water, food coloring. Answer & The density of corn syrup us lugher (^14 g - water (2191 cm). corn syrup is lugher (21,4 glum) than Density of vegetable oil is -vegetable oil is less (20.932 less (20.93 g/cm3) than water of it floats on top of water it Density of food coloring us slightly ligher than water and falls to the dottom of container There fore, order of fluids according to density will be; vegetable oil L water < food coloring a corn syrup. Answer @ Epample of Density Separation at lieme: - Oil & water is the two things which are easily available at home. Density of oid is less than water. So, whenever we mixed oid & water, the two layers are formed and get separated. The lower layer is water layer and the upper layer is oid layer. This example shows illeat the higher density diquid forms lower layer and lowen density liquid forms upper layer and floats on water.

Answer & water Buoya direc it. Page no.02) Answer Densities of iron 7.87 g/cm² Answe4- Aluminium = 2.7 g/cm3 Lead = 11.34 g/cm² litluum = 0.53 glem? Answer & Car having sead battery & cell-phone having Qithium battery. Due to sunless periods the renewable energy is stored in batteries. head batteries are cheap but offers a low energy density and low cycle Stability whereas lithuun battery is used for long term. • cell phones are used whole day that's why long teum litluum battery is used; whereas Cars aree not driven by peoples whole day so, lead battery is used in them. lead & Car. • And also density point of view has move density than lithium & cellphone. ARS 6 Airplanes made mostly of aluminium and cars are made mostly of iron because Airplanes fly in the sky and low density metal is needed. Aluminium has less density than iron. That's wley Aluminium is used in airplanes. Caurs wee driven on doads so high. density metal has no effect on roads that's roles ears are made by iron.

Answer - Page no-03 Density of Gold = 19-32gleme Density of Helium = 0.21 glem Answer & An aircraft made of secon floats on water because the slip is Collow and a Buoyant force us work which is un upward direction means the weight of water puslas it. 30 alcraft floats on wale