The value had to be converted into mL, and the mass had to be divided by the volume. The metric ruler, the digital gram scale, the graduated cylinder, volumetric flask and serological pipet were all used to capture measurements of various household objects and solutions.
The experiment specifically states not to touch the bottom or the sides of the beaker. The key was the shortest length measured, followed by the spoon and the fork was the longest length measured.
How is science a human endeavor? Along with making the appropriate measurements, will I be able to use the rules I was taught and record my data with the correct significant figures? The Nature of Science in Science Education: To find in meter we moved from cm to meter two decimal points to the left or double check our self divided by and all records in data table 1.
This could ruin the whole batch, depending on the ingredient and how much was spilled. If one dropped the object into the beaker the measurements would be incorrect. Another reason why the temperature measured in the laboratory was lower than C for the boiling water could be because pure water boils at C and water from the tap is not pure.
The scale measured the mass of the water displaced by the bolt and its measurement was recorded in data table 7.
For example, if the digital scale, required for most of the lab, is not tarred right, your numbers from your experiment are going to be way off. Random errors are errors that affect the precision of a measurement. To determine the density of aluminum applying the technique of water displacement and use that value to determine the thickness of a piece of aluminum foil.
The unit of measure is used so much throughout the world everyday that without it, the world would have no since of weight, mass, height, width, or any other unit from the Si family. The history of science reveals both evolutionary and revolutionary changes.
A think-stemmed pipet was completely filled with water. Record these values on your lab report. Carefully add all the aluminum pellets to the water, making sure not to lose any water to splashing.
Counting the drops seemed somewhat subjective, because it depended on how big the drops were. Due to the design of test tubes, I was able to fill it all the way with the water, and this yielded accurate results when measuring its volume in the graded cylinder.
The mass of the substance was recorded in data table 5. Since this was the first lab the many of the students have probably done in a couple years, I see plenty of room for human error do to the lack of training or experience with most of the lab equipment required to compete this lab to the full.
The following list is the bulk of the reading for the course. Another reason why the temperature could of not been accurately recorded was because the boiling water was poured out of the stainless steel kettle into a glass beaker and then the temperature was measured. The short answer is that we cannot.
The water will boil faster in Colorado. An important part of the modules is the techniques checklist.
After a few tries I was able to succeed in calculating all the appropriate calculation required for this lab as well as using the appropriate significant figures for all my answers in my lab right up.
Be sure to use the same electronic balance as before. The accuracy of measurements subject to systematic errors cannot be improved by repeating those measurements.
Our understanding that only pure water boils up to Celsius. This will greatly reduce your prep time when cooking. I expected the density of the salt solution to be higher, because the mass of the solution would increase compared to just water.In performing this experiment number 1, Basic Laboratory Techniques, I conclude that in doing laboratory experiment, you are required to have a careful and keen observation plus proper and right laboratory techniques and operations to obtain correct results.
To use standard laboratory measurement devices to measure length, volume and mass amounts. To use these measurements to determine the areas of shapes and volumes To determine the density of water.
To determine the density of a solid and use this to determine further quantities. To determine the. Exp. Laboratory Techniques & Measurements Lab Section.
Data Tables. Base on this experiment done, what can report be based on the answers provided below?????? Length Measurements Object Measured Length in cm Length in mm Length in m CD or DVD 12cm mm m Key cm 75 mm m Fork cm mm m Warm Temperature.
spck laboratory techniques and measurements antacid analysis and titration molecular chem n1 - casper college - the labpaq!!! lab experiments will be performed at home (or at a location convenient to you), using a chemistry labpaq ck-csp (hereafter referred to as the paq).
Lab. Stoichiometry. Parts of the text on this lab will not print out. This is by design. This lab is designed to provide data which demonstrate the validity of the mathematical techniques of stoichiometry.
if stoichiometry predicts that the reaction will produce g but the lab measurement is g then the percent yield is. Basic Lab Report Basic Laboratory Techniques Hari D.
Mandal, PhD. Objectives 1. To use common laboratory apparatus in measuring mass, length, volume, temperature, and density 2. To compute the accuracy and the precision of a set of scientific measurements 3.Download