We also talk about the equipment that was available for the students to earn and how that equipment could be used to determine which liquid was water. Lesson 2 the nitty gritty of density by teresa kennedy page 1416 density station data sheet page 17 liquid layers lab sheet page 18 lesson 3 wet goes up, must come down by cory patterson page 1921 wet goes up must come down lab data sheet page 22 lesson 4 density is in the air by tiffany, teresa and cory page 2326. This events consists of two parts a written test on density, buoyancy, concentrations, and. The density of any substance is a ratio and may be calculated by dividing the mass of the sample by its volume. Density of solids and liquids by peter hidnert and elmer l. The slope of this line would be the density of the substance.
We offer a full range of dissecting equipment to fit all your lab needs. Determining the density of a solid and liquid protocol jove. In this lab investigation, we are mainly concerned with determining the density. Chem111g lab report for density experiment experiment 1 lab report for density experiment experiment 1 university. This video demonstrates how to calculate the density of a mystery liquid using excel to graph the data collected on mass and volume. Browse the latest lab supplies and equipment for all your science lab. Density of liquids lab and rubric mass, float, sink, buoyancy word and pdf. During the post lab assignment, you will calculate the density of your unknown. Use the scale to measure the mass of an object, then hold the object under water to measure its volume. Will a raisin, paperclip, penny, small cork, ball of paper, and other small objects sink or float if. Calculate the density of the mystery liquid by dividing the mass by the volume.
Liquid density tower physics activity and experiment for kids. After the density and boiling point of the liquid is determined, there will only be 1 ml of chemical waste that must be placed in the labeled waste container. If the mass and volume of a cube is found, then the density of the cube will determine the material of the cube. You will determine the mass and the volume of given materials to find their density density massvolume. This is a data analysis lab where students analyze mass and volume data for two mystery liquids, oil and water, and use the data to explore linear functions. Students may extend the lesson and inquiry processes as they design their own density experiment using liquids they decide upon and bring from home. This layering liquids density experiment is fun and tasty.
The aim of this experiment the objective of this exp. What if you measured 20 nails made from the same substance, how would the density be affected. Densitymystery canisters teaching materials collection. It must be taken into account that the density of a liquid is practically constant, since the volume occupied by a given mass of a liquid is almost invariable. Density lab conclusion questions herberg middle school. Can you distinguish between 5 clear liquids based on how they behave.
The lesson has been developed as an example of using graphing calculators in high school math and science lessons. Density cube lab apopka memorial middle school 8th grade. This is an important concept to share with students to reinforce the concept and units used when describing density special notes. To determine the densities of water, an unknown liquid, a rubber stopper, and. Density cube set 9 cubes, graduated cylinder, ruler, balance. You can, however, measure the volume and mass of a liquid directly and, for most applications, simultaneously. What is the relationship between water pressure and. If one side of the cube measures 4 cm, what is the density of the aluminum. Discovering the identity of the mystery substance by victoria bay lab partners andy scarvie, kali noll, and jordan skinner chemistry matter unit october 12, 2010 method. Mystery liquid density lab editable by mr d and science. You will collect data for the mass and volume of a liquid and graph the results. If instead of water you had a liquid with a density of 8gcm 3, which cubes would float. Because not every liquid in this lab is hydrophobic, pouring the correct order of the liquids matters as they will not automatically sort with respect to density.
As for liquids, the measured density of a solid sample is the ratio of the. Fluid mechanics first entered the ap physics b course description in 2002. Liquid density measurements and sugar concentration of coke learning the techniques of common laboratory measurements is a principle goal of the laboratory experience in chem 123. Each student experiment should begin with a question from the the initial mystery liquids lab. The concept of density is reinforced as students measure the volume and mass of an unknown liquid in a graduated cylinder, graph the results, and predict the mass of the empty cylinder from their data. Be sure to show how you calculated the densities of all the materials before you fill the values into the data table 2. Tap water isopropyl rubbing alcohol 70% detergent water salt water mineral oil. To understand that density is a physical property which can be used to identify a substance. As temperature increase does the density of a liquid increase. Describe the density of the cubes that floated compared to the density of the water.
Replace the liquid, clean your graduate cylinder and repeat steps 17 for the other mystery. The experiment the question that is posed in this experiment is, what is the density of an egg. The operation of the hydrometer is based on the archimedes principle that a solid suspended in a fluid will be buoyed up by a force equal to the weight of the fluid displaced. Materials 3 film canisters various small materials to change mass marbles, washers, beads, etc. Lab report for density experiment experiment 1 studocu. This lab emphasizes analytic measurements, experimental technique, and problem solving, in determining measurements. You will break up into teams of two to perform this experiment. Carolina is your quality source for a wellequipped lab. If mass is a measure of how much stuff there is in an object or liquid, density is a measure of how tightly that stuff is packed together. Circle the correct responses in the following statement. Phy pack 9 density of liquids 4 produced by the physics group university of cape coast as part of a delphe funded project b.
See how we set up super easy liquid density tower physics activity for kids. They should notice that the floating vial has a density less than 1 gml, the sinking vial has a density greater than 1 gml, and the suspended vial has a density close to 1 gml. Volume measurements and the determination of density. Density a comparison of the mass of a substance with its volume. Density of liquids lab and rubric mass, float, sink. The density of the unknown liquid that was determined in this lab was. There are sets available for all skill levels or can be customized. Physics i labs 1 the fact that the steel pellets sink in. There are tons of simple science and stem activities that are so much fun for kids. For example, if you chopped one of the blocks you found the density for in half, how would its density change. Your job will be to develop a series of experiments to identify your 5 mystery substances. Layering liquids teachers guide a hudson river plume. It was previously a trial event at the 2018 national tournament. Liquid density depends on the amount of solute dissolved in the solution.
When you have completed this course you will have competencies in a number of laboratory techniques. The typical density of seawater is about 1025 kgm3. Lab 1 density determinations and various methods to measure. We can calculate density of a each liquid using the formula. Conclusion the density of water that has been determined by this lab was. An example of diffusion is when perfume is sprayed and eventually is smelled. Sevenlayer density column experiments steve spangler. An object or liquid tends to sink in a liquid with less density than the object. This teachers manual includes five 25 to 50minute lessons and possible followup lessons.
If the mass and volume of a substance can be measured, the density. Density is a basic physical property of a homogeneous substance. Pass out a copy of density lab volume by formula to each student. Remember to carefully measure the bottom of the meniscus to the nearest tenth of a milliliter. To discover the identity of each cube based on its density. Create a custom object to explore the effects of mass and volume on density. May 26, 2018 learning about density is great fun for kids. Aug 12, 2019 they should notice that the floating vial has a density less than 1 gml, the sinking vial has a density greater than 1 gml, and the suspended vial has a density close to 1 gml. Read the density from where the liquid crosses the hydrometers scale. When calculating the density of a sample, the mass and the volume of the sample are determined and the mass of the sample is then divided by the volume. Tap water isopropyl rubbing alcohol 70% detergent water salt water mineral oil 5 small cups. After finding the density of the mystery liquid, what can you conclude that your liquid was.
Virtual lab determine the mystery elements by their properties. Repeat this procedure to find the density of each liquid 2 determine the density of each of the above, using a hydrometer and an ungraduated cylinder. Mystery liquid density lab by teacher upgrades tpt. Some liquids or objects are more dense and sink in water. Why would heating the gas in an air balloon make the balloon rise. A collection of science experiments from steve spangler science your inbox is about to become a lot more exciting. Thus, the lighter the liquid that is, the less its specific gravity, the deeper the body. The teacher can extend the lesson with student lab groups, designing their own density experiments based upon their knowledge gained and questions and answers that arose during the mystery liquids lab. Measurement of density introduction baruch college. Peffer density data may be used for obtaining relationships between density, chemical composition, thermal and mechanical treatments of materials, etc. Elements are generally divided into 3 main groups metals, nonmetals and metalloids. It may not be possible to determine the exact density of the mystery solution. Find the mass of each cube using a balance and record results in the data table.
Target density lab continued 4 21 inn cientiic inc a ights eserve target density lab worksheet in this lab, you are going to have some fun with density. Change the mass and volume and try to make the block float. Eighth grade lesson chemistry lab practical mystery liquids. Here is a link to the lab sheet that they students followed.
This activity invites the students to experiment with different mixed densities by. The liquids with a higher density weigh more will sink below the liquid with a lower density weighs less. Provide students with at 3 different liquids, make sure they are all different colors, but dont tell them what each liquid is. When two liquids of different densities are mixed, the liquid that is less dense, in this case the oil, floats above the other liquid. University of florida chemistry outreach program liquid. Causal patterns in density harvard cfa harvard university. Volumes of liquids such as water can be readily measured in a graduated cylinder. Laboratory experiments experiment no 2 density and specific weight estimation for the liquids and solid materials. This circular defines density and specific gravity, describes 11 methods hydrostatic weighing, picnometer, flotation. The purpose of this assignment was to determine the identity of the mystery substance provided by the teacher. Consult with the lab assistanttechnician at your campus. Determination of the density of liquids open university. Density is a basic property of all pure substances.
Compare your calculated density to those listed in table 1 to identify your unknown. The purpose of this lab is to determine the identity of an unknown liquid by measuring its density, melting point, boiling point, and solubility in both water and alcohol, and then. We think making density towers is a little bit of science magic for the junior scientist but also incorporates a good dose of cool physics. It previously was held in the 2019 season, the first season it was an official event. Youll receive an email every wednesday with a handson science experiment that you can do yourself. Density is the mass of a substance per unit volume.
Take time to view our high quality science lab equipment that has proven durability to handle any lab activity. Among the information compiled in this resource are the density values for all of the solid and liquid elements and numerous compounds. The density of oil is less than the density of water. Theory density is a physical property shared by all forms of matter solids, liquids, and gases. The volume of a solid can be difficult to obtain, while the mass of a gas can rarely be measured directly. Nov 21, 2011 density ice mystery lab and pepsi mystery lab. Density is a physical chemical property of matter and an intensive extensive property of matter what devices will you use to measure the mass and the volume of water in part a of this lab. Density lab, also known by the names buoyancy lab and buoy oh buoy, is an event for the 2020 season. You need to make a table in which your readings can be recorded.
Density ice mystery lab and pepsi mystery lab youtube. Upgrade your density activities and strengthen your students understanding of the concept. Record the mass, volume, and density of all known materials styrofoamwood. These are the online followup questions for the threetask lab you did in class. Students will use what they have learned about density to identify various mystery liquids.
Purpose the purpose of this lab is to determine the relationship between the density of a material and if it will sink or float in water. Diffusion the process of matter spreading out evenly from its source. To measure the density of a sample of material, both the mass and volume of. Apr 24, 2017 the density of a liquid is far easier to measure than that of a solid or gas. Student guide you are provided with a measuring cylinder, a beaker, a lever balance and the liquid whose density is to be determined. Uponconsideringthedataandobservationsofthisinvestigation,the resultscouldbeduetothefact. If you have a pure substance, how is density affected with different amounts of that substance. You will then learn how that graph can help you make accurate predictions. The table below has the density values for some common materials. Calculate the density of a 900g rectangular block with the following dimensions. Scientific investigation and inquirygraphing data and interpreting the resultscommunication of resultscollaboration with peersincludes links to video explanatio.
Student guide you are provided with a measuring cylinder, a beaker, a lever balance and the liquid whose. Determine the mystery elements by their properties background. Find the mass of each cube using a balance and record results in the data. The purpose of this lab is to determine the density of water, the density of an unknown liquid and the density of an unknown solid. Density of a solution, concentration, trialanderror, sc. Drano consists of liquid lye and sodium hypochlorite. Laboratory experiments experiment no 2 density and. They then can make predictions about other canisters with given weights as whether they will float, sink, or be suspended in the tub of water. Experiment 3 introduction to density introduction the purpose of this experiment is to understand the meaning and significance of the density of a substance. Layering liquids density experiment inspiration laboratories. Instead of using saltwater, we are using sugar water.
This section introduces a puzzle about densitythat it is nonobvious. The density cubes have been wrapped in electrical tape to conceal their identities see my reflection why hide the identity of the density cubes. Page 1 of 3 chem 1411 hazard assessment experiment 1 the. Chemistry unit 3a packet 2 essential questions 1 how do. An old riddle asks which is heavier, a pound of feathers or a pound of lead. The density of a liquid is far easier to measure than that of a solid or gas. Scientific investigation and inquirygraphing data and interpreting the resultscommunication of resultscollaboration with. Period 2 building a density column lab building a density column. Students will need to be able to measure their unknown liquid up to a. We have done this density experiment before with our saltwater density investigation. To use the water displacement method, an object in this case, a small metal. Liquid density measurements and sugar concentration of coke. In this laboratory exercise the density of a solid, a pure liquid and several.
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