Chem lab 1

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Chem lab 1

Measurement Skills The first lab addresses a critical part of science, which is to know how to use measuring tools, how to make accurate measurements, and how to communicate those values clearly.

In science you also want to be sure that the accuracy of the measurements are properly shown. Lab 1 gets you started with that skill. Building the International Space Station involved thousands of measurements.

They were all crucial to the integrity of the station. Measurements are also vital to the operation of the station. Use measuring tools correctly. In this experiment you will be looking at some of the measuring tools in your kit. Specifically, these are the metric ruler, thermometer, graduated cylinders, and digital balance.

These measure length, temperature, volume, and mass weight respectively. These tools let you find and communicate accurate facts about items. A lot can be learned from these simple measurements. Read and record measurements correctly significant figures and units.

This objective means you try to get the most out of the tools mentioned above by being as accurate as possible. The words, "significant figures" also called significant digitsmean being clear about its accuracy; neither underestimating or overestimating the accuracy.

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The words, "and units", means don't forget to include the unit of measurement its dimension. In math classes, you normally deal with abstract numbers like "5, 3, and 7. Associate metric units with the quantity being used.

The metric system is one of the greatest inventions of mankind. Without a system that allows everyone to find agreement on measurements such as distance, mass, and volume, the advances in technology including modern manufacturing and trade would have been impossible.

Seeing the beauty in its simplicity and ease of standardizing measurements, he declared "Metrics is for all people for all time. Even George Washington and Thomas Jefferson begged the Congress to adopt a system just like the metric system. Unfortunately, Congress procrastinated, and we would were stuck with the English system.

Metrics is covered in one of the lecture tutorials. You can visit it by following this link: Learn how to determine volume using geometry, liquid transfer, liquid displacement, and mass. Learning a few tricks on finding an object's volume. Applications Applications for "Objective 1: Use measuring tools correctly".

In chemistry as in many fields, you will frequently be measuring something and be using a variety of measuring tools. These tools could be a simple metric ruler or a complicated electronic pH meter.

Measuring the mass of chemicals using digital and analog balances. Measuring smalls volumes using 1 microliter a millionth of a meter micropipettes or measuring larger one liter volumes using a large graduated cylinder or volumetric flask. Measuring temperatures using a variety of digital and analog thermometers that are based on different technologies.

Measuring out the proper dose in a syringe.

Stoichiometry

Taking someone's blood pressure. Knowing how to use both digital and analog thermometers and knowing which ones are used for ears, forehead, mouth, and rectum. Nearly every discipline involves making measurements. Measurements are only as good as the measuring tool and the person's skill at using that measuring tool.

Applications for "Objective 2: Read and record measurements correctly". A person may know which measuring tool is the most appropriate tool to use and know how to set up the tool to take measurements, but that person must also know how to read and record those measurements correctly.

For example, a person may know that an analytical balance is the right choice for weighing items under half a pound.Colligative Properties: Freezing Point Depression Makayla Stepp-Davis University of Mary Washington 1/21/16 Abstract Four molal solutions made of NaCl, MgCl 2, Al(NO 3) 3 and Urea, and prepared with g water then frozen in an acetone and dry ice bath.

Each solution was frozen twice to test the depressed freezing point and the average was used to calculate data. The Department of Chemistry and Biochemistry has split into two separate departments.

Department of Chemistry Website Department of Biochemistry Website. A chemistry lab requires students to identify chemical compounds by using various tests. Each? student is given samples of three different compounds, labeled A, B, and C.

Click Here to learn more about the learning tools available at Chem21Labs. The Virtual Lab is an online simulation of a chemistry lab.

Chem lab 1

It is designed to help students link chemical computations with authentic laboratory chemistry. The lab allows students to select from hundreds of standard reagents (aqueous) and manipulate them in a manner resembling a real lab. More information and offline downloads. Please scroll below to find our collection of pre-written problems.

Lab 1. Title: Separation of the Components of a Mixture Purpose: The purpose of this lab was to separate a mixture into three substances through decantation, extraction, and sublimation.5/5(1).

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