Physical And Chemical Properties Lab Report
Title: Physical and Chemical Properties
Purpose: To investigate the physical and chemical properties of pure substances as distinguishing characteristics.
Procedure:
1. Set up a well plate with 24 pieces and fill two with either Dilute HCl or Dilute NaOH.
2. Set up four test tubes with any single substance in each one.
3. Observe and record original color and odor of substance.
4. Light flame with matches.
-Hold test tube with substance in it over flame with clamps
-Observe and record reaction with heat
5. Pour cold tap water in the second tube of the substance.
-Observe and record solubility of substance with cold tap water, when mixed.
6. Heat test tube of cold tap water and substance over lit flame
-Observe and record solubility in hot tap water. …show more content…
Yes, I observed chemical changes during this experiment.
What evidence did you use to decide that something was a chemical change? Give at least two examples of chemical changes you observed.
In CuCo3 reacting with HCl, which released a light green gas and produced bubbles. Cu(NO3)2 changed to a green and yellow color, and NaCl mixed with HCl changed to hold a slightly yellow tint. CuCo3 with NaOH changed to a darker color, also irreversible.
These are all signs that a chemical change occurred.
Classify the following properties of sodium metal as physical or chemical:
• Silver metallic color: physical
• Turns gray in air: chemical
• Melts at 98oC:
Purpose: To investigate the physical and chemical properties of pure substances as distinguishing characteristics.
Procedure:
1. Set up a well plate with 24 pieces and fill two with either Dilute HCl or Dilute NaOH.
2. Set up four test tubes with any single substance in each one.
3. Observe and record original color and odor of substance.
4. Light flame with matches.
-Hold test tube with substance in it over flame with clamps
-Observe and record reaction with heat
5. Pour cold tap water in the second tube of the substance.
-Observe and record solubility of substance with cold tap water, when mixed.
6. Heat test tube of cold tap water and substance over lit flame
-Observe and record solubility in hot tap water. …show more content…
Yes, I observed chemical changes during this experiment.
What evidence did you use to decide that something was a chemical change? Give at least two examples of chemical changes you observed.
In CuCo3 reacting with HCl, which released a light green gas and produced bubbles. Cu(NO3)2 changed to a green and yellow color, and NaCl mixed with HCl changed to hold a slightly yellow tint. CuCo3 with NaOH changed to a darker color, also irreversible.
These are all signs that a chemical change occurred.
Classify the following properties of sodium metal as physical or chemical:
• Silver metallic color: physical
• Turns gray in air: chemical
• Melts at 98oC: