Water Density Lab

Procedure: Measure the volume, mass, length and temperature of a variety of items. Create dilution of sugar water.

Procedure: I used a ruler, thermometer, and scale to take measurements. I used a graduated cylinder, short step pipet, scale, and ruler to determine volume and density. I used a volumetric flask, graduated pipet, pipet bulb, scale, and glass beaker to determine concentrations and densities of various dilutions.

The objective of this experiment was to learn how water displacement affected density. Another objective was to identify the metals used in our experiments. We used a variety of different metals to test their correlation and to find out if it was negative or positive. I did not expect to learn much from this experiment as we had already discussed density in class and learned that water displacement is basically volume so as it increased the density would have decreased had we used metals of the same mass.

Experiment 2 “Density” was about how to measure the mass and volume and determine the density of water, alcohol, and a solid. For this lab, we begin by calculating the mass of empty graduated cylinder and the mass of 25 mL of tap water. After taking the mass of water and cylinder, we record it on “Density of Water: Data Table”. Since we did not have enough time of complete the whole lab, so we skipped the procedure to measure the density of alcohol. We jumped to the next procedure, which was density of a solid. For that we used a copper and it density 8.95. For this lab, my partner and I did not make any mistakes or errors. But, for better improvement I think we should have more time to complete the whole lab. I felt like we was rushing through

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

First students obtained 8 graduated cylinders and labeled them. Each one contained a different ratio of vinegar and water. These graduated cylinders with the liquid were weighed and recorded.Then, students obtained an Alka-Seltzer tablet and recorded its mass. Then one alka-seltzer tablet was dropped into each of the graduated cylinders. Students had to

Introduction: Accuracy and precision were the major aspects of the lab. Accuracy is how close the average of the measured values are to the actual value. Precision is the closeness of repeated measurements. In the lab, the aim was to get as close as possible with both accuracy and precision when determining the mass and volume of the spheres. The mass was determined by weighing the spheres on the Analytical Scale and Triple Beam Balance Scale. The volume is determined by measuring with a ruler and by water displacement. The standard

2. In order to calculate the density of a solid or liquid sample, what measurements are needed?

Weigh the mass of the beaker including the 300mls of water in it on a scale to record the weight, taking away the weight of

The density identification and comparison lab was used to determine the identity of an unknown metal, liquid, and wood using density alone. The main purpose of the lab was to use density to determine the identity of unknown materials allowing for a better understanding of density, and to what extent you can use it to identify materials with. Though it was also used as a way to practice finding mass, volume and density, and pertaining to lab experience it was used as a way to give students a chance to practice writing in depth lab procedures and data tables.

The objective of this lab experiment was to determine the density of a set of plastic beads by using two different methods and decide which method was better. Density is a physical property that is defined as the ratio of an object’s mass to an object’s volume. Also density can be described as the measurement of how compact a substance is in a given space. To find an object’s density, it is necessary to measure the object’s mass, the amount of matter present, and volume, the space it takes up. Also when studying density, it is important to note how objects with varying densities behave. The density of water, at room temperature, is 1.00 g/mL and is often used to help determine the density of a substance based on if it sinks or floats in water. The measurement of the object’s density is important to the plastic company because it allows the company to make sure the product meets the design specifications. In determining the object’s density, the methods of displacement and floatation, were implemented.

A, B & C: For this experiment first I weighed a metal bolt using a digital scale, getting a weight of 7.8 g. Then I filled the graduated cylinder with water to 10-mL. Next I placed the metal bolt into the cylinder and recorded the new volume. This reading was 12-mL.

The experiment used a Vernier caliper to measure the height and the diameter of a cylinder. A Vernier caliper was also used to measure the diameter of the sphere. A meter stick was used to measure the length, width, and height of the wooden block. The precision of an instrument such as a Vernier caliper or a meter stick determines how many significant figures the data is presented in. The mass of the objects being tested will be measured using an electronic balance. The equations used in this experiment to determine the volumes were the volume of the cylinder: πr2h; volume of the block: (length)*(width)*(height); and the volume of the sphere: (4π/3) (r3). The volumes of these objects will be divided by their respective masses to determine the density of each object.

Mass density describes how heavy an object is. Defined by the Greek letter ρ, read as rho, density is a basic yet important physical property of matter. For a bulk body without accounting its existing pores and voids, density is represented by the ratio of its mass and volume. It is given by the equation

This experiment is primarily focused on the measurement of the density and the determination of the partial molar volume of ethanol-water system. A partial molar volume is a thermodynamic quantity defined as a change in volume per mole of substance added to the mixture at constant temperature and pressure, indicating that molar volumes are non-additive. Solutions of ethanol and water had been prepared with varying concentrations and a pycnometer was calibrated and used by weighing it along with the liquid samples one at a time, for the accurate measurement of the density of each mixture. The latter was measured in order to calculate for the excess molar volume and partial molar volume for both components. The data were then used for calculating other physical quantities such as molar volume, molar fraction, and molecular weight.