Assignments and home work
1). Watch this video to understand how to separate a mixture of sand and salt.
https://www.youtube.com/watch?v=O6s6Q3oWsgY (Links to an external site.)
https://www.youtube.com/watch?v=vjnhNm8rv9E (Links to an external site.)
Then used the data from the video to complete the calculation for lab report on the attached paper here
EXPERIMENT-2-Separation of Mixture.pdfActions
2) types of reaction with answer
A. Types of Chemical Reaction Worksheet.pdfActions (answer)
1.Types of Chemical Reactions.pdfActions (defination)
2..Types of Reactions homework pdf.pdfActions
3.balancing and writing reaction pdf.pdfActions
4.Net Ionic Equation homework.pdfActions
https://www.youtube.com/watch?v=aMU1RaRulSo (Links to an external site.)
3) 1.naming compounds homework (1) (1).pdfActions
2.Ionic-Compounds-homework (1) (1).pdfActions
3.molar mass homework.pdfActions
4.percentage composition homeworkpdf.pdfActions
5.Empirical Formula homeworkpdf.pdfActions
4).
In this experiment, you will be using the report sheet to perform calculations with data you will see in the videos. You can do your calculations and fill out the report sheet.
Density is a conversion factor between mass and volume–it is a ratio. As with any ratio quantity, you must therefore do two experiments to find the density. You must measure the mass of a sample of the substance and then, with the same sample, measure its volume. The ratio of your two results is the density.
In this experiment, we are measuring the density of a liquid as shown in the video below. Notice that the video is using a different number of sig figs for data collection and they are measuring the mass of the graduated cylinder rather than putting the measured volume into a beaker and weighing that.
Lab 2.1 Measuring the Mass and Volume of Water (Links to an external site.)
Lab 2.1 Measuring the Mass and Volume of Water
In the second part of the experiment, we measure the density of a solid cylinder of metal. The metal we are using is Tin and its density is given in the table at the bottom of your report sheet. The video below demonstrates this technique. Again, we weigh the metal for our mass and then determine its volume. The volume, in this case, is determined by measuring the volume of water displaced as the metal is submerged in the graduated cylinder. The difference of volume readings before and after the metal is submerged measures the volume of water displaced and, thus, the volume of the metal. Since 1 mL is the same thing as 1 cm 3, we can record the volume in either unit.
https://www.youtube.com/watch?time_continue=144&v=k7sVz8wcnWs&feature=emb_logo (Links to an external site.)
4.Sample Lab Report (1).pdfActions
Lab2_Density (1).pdfActions
