Liquids and Solids
Liquids & Solids
Pre Lab Questions: 3pts
1. What are the learning goals of this lab?
The learning goal of this experiment is to view and experience the melting point and boiling point of different substances.
2. Why is acetamide not allowed in contact with your skin? What precautions does one have to take to work with this chemical?
Acetamide is a carcinogen, which can cause cancer. Therefore, it should not be allowed to come in contact with a person’s skin. Any person working with this chemical to wear gloves, and follow all precautionary procedures. A person should also make sure to wear long sleeves, closed toed shoes, and long pants to avoid contact with the skin.
3. Define the B.Pt of liquids and M.Pt of solids. Why is it important to determine these physical properties of a substance?
The melting point of a solid is the point at which a solid becomes a liquid with standard atmospheric pressure. The boiling point of a liquid is the temperature at which the vapor pressure of a liquid equals the external pressure. It is important to know these characteristics of a substance so that you can handle them in the correct manner. The boiling point and melting point can also be used to identify an unknown substance.
Liquids and Solids
CHEM1411
10/20/12
1. Procedure (4pt)
(Write the procedure in your own words after you read the manual)
1. B.Pt:
(Part One)
• At the beginning of the experiemtn make sure you gather all necessary materials, i.e., spoon, alcohol, rubber bands, and a sheet of paper. When doing an experiement, be sure to set up a data table to record all results. In this case a data section has been provided by the instructor. Then, you should complete the assembly, exactly like the illustration provided by the lab manual.
• Put 1 mL of alcohol in the test tube. Then you should take the thermometer and place it side by side with the test tube. Make sure that the bulb of the thermometer is even
Pre Lab Questions: 3pts
1. What are the learning goals of this lab?
The learning goal of this experiment is to view and experience the melting point and boiling point of different substances.
2. Why is acetamide not allowed in contact with your skin? What precautions does one have to take to work with this chemical?
Acetamide is a carcinogen, which can cause cancer. Therefore, it should not be allowed to come in contact with a person’s skin. Any person working with this chemical to wear gloves, and follow all precautionary procedures. A person should also make sure to wear long sleeves, closed toed shoes, and long pants to avoid contact with the skin.
3. Define the B.Pt of liquids and M.Pt of solids. Why is it important to determine these physical properties of a substance?
The melting point of a solid is the point at which a solid becomes a liquid with standard atmospheric pressure. The boiling point of a liquid is the temperature at which the vapor pressure of a liquid equals the external pressure. It is important to know these characteristics of a substance so that you can handle them in the correct manner. The boiling point and melting point can also be used to identify an unknown substance.
Liquids and Solids
CHEM1411
10/20/12
1. Procedure (4pt)
(Write the procedure in your own words after you read the manual)
1. B.Pt:
(Part One)
• At the beginning of the experiemtn make sure you gather all necessary materials, i.e., spoon, alcohol, rubber bands, and a sheet of paper. When doing an experiement, be sure to set up a data table to record all results. In this case a data section has been provided by the instructor. Then, you should complete the assembly, exactly like the illustration provided by the lab manual.
• Put 1 mL of alcohol in the test tube. Then you should take the thermometer and place it side by side with the test tube. Make sure that the bulb of the thermometer is even