Specific Gravity Research Paper

because each of the objects displaced the water by 1 mL, their mass over that mL is their density.

Density is the amount of matter per unit of measurement (Merriam-Webster. Merriam-Webster, n.d. Web. 26 Aug. 2016.). If water has a density of 1.0 g/mL and you place a substance with a density of 1.8 g/mL the substance will sink because it is denser than water. Density is often measured in g/cm^3 or g/mL because the formula for density is D=m/v.

Purpose: Weighing objects. Figuring out the density with an object by calculated volume and Archimedes’ Principle.

5. Calculate the density of an object that has a mass of 43 g and a volume of 56.0 mL.

Because there is surface tension the water molecules will adhere together to create a skin sheet that can hold the horizontal needle up. The vertical needle breaks through the sheet. If the horizontal needle was wet and to tried to get the needle to float it would not do so. The needles that were dropped horizontally that did not touch the water horizontal would not float because part of the needle is already sinking before the rest of the needle hits the water.

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

To begin, did you know tin foil can float with pennies? Rapping tin foil like a boat and putting pennies in the boat. I can see how strong tin foil is and what brand is the best. Buoyancy the ability or tendency to float in water or air or some other fluid.

In Measuring and Understanding Density, several experiments were performed to find density of regularly shaped objects, irregularly shaped objects, liquids and gasses. An additional experiment was done to find the specific gravity of a sampling of liquids. The purpose of the experiment was to provide a better understanding of density and to be able to extrapolate unknowns based upon these calculations. The experiments yielded data in keeping with Kinetic-molecular theory in regards to the density of water versus its temperature. Key measurements and formulae were also used to determine densities of metal and plastic objects as well as irregularly shaped rocks. It is possible to find the density of an object (be it liquid, gas or

Conclusion: The purpose of this lab was to find the relationship between the mass and the volume of the four samples. The densities from least to greatest were shortest(4), short(3), medium(2), and longest(1). Density can vary with temperature, and that could cause errors in the collected data. A real world application of density is icebergs. Icebergs float because they are less dense than the water around them. The icebergs are made of frozen freshwater but they are surrounded by very cold salt water. Initially, salt water has a higher density than freshwater and the low temperatures of the water cause the density to increase even more. The salt water and its increasingly high density allows for the less dense icebergs to float. Knowing this about density is good to know so we can figure out how things in the world work, like how and why massive icebergs float in the middle of the

__A__ 1. The weight of an object is a. a measure of the gravitational force pulling the object toward the earth. b. equal to the mass of the matter in the object. c. a measure of the space occupied by the object. d. the same at any location on the earth.

D. An object has a density of 11.3 g/cm3. If it weighs 7.0 g and you added it to a graduated cylinder with 5.0 mL of water, what will be the new volume of water in the cylinder after the object is added?

The purpose of this lab was to identify unknown substances using density. We had three unknown substances; a yellow liquid and two metal rods. For each substance we measured volume using the water displacement method in a graduated cylinder and mass using a triple beam balance. Then we calculated density using the formula density (g/cm3)= mass (g)/volume (cm3). The data we collected in the lab is in the table below. After comparing our data with the density chart we were able to determine the identities of the substances. The liquid was cooking oil and the rods 1 and 2 were copper and aluminium, respectively. In conclusion, density - a characteristic property- is important because even though many substances may look the same but have different

In this experiment, we will be testing density at different temperatures in a specific substance, in this case, sugar water. Density is the degree of the compactness of a substance. In your everyday life, density is all around even if you don’t realize it. To find density you have to divide mass by volume to get the density.

Gravimetric analysis is a quantitative (i.e. how much?) method of classical analysis. The element to be determined is isolated in a solid compound of known identity and definite composition. The mass of the element that was present in the original sample can be determined from the mass of this compound.

After that, it is crucial to convert the mass to volume. The water density at a temperature will aid this process. The compliance of the Volume Occupied by 1.000g of Water Weigh in Air table is deemed necessary throughout the comparison.