Could you develop your last sentence? Materials and Methods During the experiment, an electronic balance, graduated cylinder, paper clips and weighing paper were used. Density as Intensive Property Density as an Intensive Property Density is the ratio between the mass of a sample and its volume. Do everything you can to reduce the number of air bubbles before reading the volume. Procedure You must find the density of two substances. While intensive properties, such as density, boiling point and freezing point, do not change as the amount of matter present changes, extensive properties do change as the amount of matter present changes. Let's prove that the ratio of intensive properties is also intensive. If they have trouble with the volume of the object, ask them if they ever talked about water displacement in middle school.
I made some effort to explain the reason for that question, and why I consider there is a problem. Ask them to show you how they are measuring the volume before they make their final measurement. Browse other questions tagged or. In the physical sciences, an intensive property also called a bulk property , is a physical property of a system that is not depending on the system size or the amount of material in the system: it is scale invariant. And I think an alloy is a mixture, which would mean that the process of combining the Copper and Zinc would be a physical change, correct? The formula for calculating density involves finding out the mass of a substance as well as the volume. Discussion Density is a physical property that can be used to identify substances in a lab. Objective Density is a fundamental property of physical objects.
After using water displacement to measure the volume of each sample, the results were that the volume of 5 paper clips is 1. Initials will be given for good data collection and calculations. An intensive property also called a bulk property , is a physical property of a system that does not depend on the system size or the amount of material in the system. Each paper clip sample started out with the same water volume; 30 milliliters. The title gives the general context, but is to be considered with the further details described in the body. Hardness - How easily a substance can be scratched. The material they were made out of may have eroded away when water displacement was used to measure the volume of the paper clip samples.
Intensive physical properties are properties that are independent of the amount of mass. In that case an additional superscript ° is added to the symbol. Density is often confused with weight. For example, if two identical are connected in , the of the system is equal to the voltage of each cell, while the transferred or the is extensive. During the experiment, this technique was used to measure the volumes of the paper clip samples. Malleability - The ability of a substance to be beaten into thin sheets. The density of pure water at room temperature is 0.
Dividing heat capacity, C p, by the mass of the system gives the specific heat capacity, c p, which is an intensive property. By contrast, an extensive property is additive for subsystems. An intensive property can be understood in this way: there is a ratio of two measurements, which together have a constant value. Collect at least five data points. Additionally, the boiling point of a substance is another example of an intensive property. To calculate the volume of this sample, the starting water volume was subtracted from the ending water volume. Conclusion This should be a one sentence summary of what was discovered.
In science, density is defined as mass per unit volume. Ask if it is important whether the objects are dry before measuring the mass or volume. And density depends on pressure actually using this same formula and molecular weight. If one does not address the issues precisely raised in the body of the question, one is simply out of topic. If you have 2 grams of copper and 2000 grams of copper, they are going to have the same density. I am still trying to understand what are intensive and extensive properties.
Length Density is an intensive property because it does not depend on the amount of matter present. An improvement that could be made to this experiment based on this error is using a different sample. This showed that densities can be used to identify substances in a lab. The density of the smaller piece was 6. All of your data points should have very different masses from one another. Designs a method for effective control of variables.
The terms intensive and extensive quantities were introduced by in 1917. Proficient Usually competent and methodical in the use of a range of techniques and equipment. The distinction between intensive and extensive properties has some theoretical uses. If you double the number of components of the system by doubling the number of atoms, the volume of liquid. The differences between the masses of the samples affected the calculated densities because although the ending volumes were different, each sample started out with the same volume of water.
Then see the property of interest of the two samples. You will find the density of two substances, including one liquid and one solid. Basic Is competent and methodical in the use of a range of techniques and equipment enough such that the lab can be completed but with substantial errors. Summary In this lab, students will use common laboratory equipment to devise a method to measure the density of several irregular objects. If the system is divided, the temperature of each subsystem is identical. Other intensive properties are derived from those two variables.
Iron is affected by magnets. Some intensive properties do not apply at very small sizes. Density - The mass of a substance divided by its volume. Abstract The purpose of this experiment was to identify whether density is an extensive or intensive physical property. The color of the smaller piece was gray and the color of the larger piece was gray. What are the densities of different sized objects made of a different material? Identifies weakness and limitations but misses some obvious faults.