Can Intercourse Make Implantation Bleeding Worse

CLASS 34 3 º A-3 º B: LABORATORY EXPERIENCE CLASS

Hello everyone

On Friday we made the following laboratory experience:

DETERMINE THE TYPE OF CONNECTION OF SOME SUBSTANCES FROM THEIR PROPERTIES

OBJECTIVE: is to ascertain the properties of three substances (copper, copper sulfate and carbon tetrachloride) and according to them, give them a type of bond (ionic, covalent or metallic).

MATERIAL AND REAGENTS: Lab Supplies: 3 beakers, glass rod rack with three test tubes containing copper (Cu), copper sulphate (CuSO 4 ) and carbon tetrachloride (CCl ₄ ), copper wire, spray bottle with distilled water, power supply, cables, lamp, 2 electrodes.

DEVELOPMENT:

Using your knowledge, complete the table:

TABLE 1	E. ION	E. covalently	E. METAL
State
Soluble in H2O
Drive in its
Drive in solution

EXPERIMENTATION:

1 .- Observe and record in Table 2 the look, color and odor of each substance and its physical state.

2 .- Measurement of electrical conductivity:

2.a. - To measure the conductivity circuit is used to indicate when the professor. To verify that installation is correct, plug in, turn the switch on the power supply and electrodes put in contact. If the bulb lights, the installation is successful and can continue. Otherwise ask the teacher.

2.b .- Put a piece of copper on a filter paper and place the electrodes in contact with him. Does the light bulb ?......... Do you drive the copper in your state, the power output? ........... RESERVES THE COPPER. I will use later.

2.c .- Pon carbon tetrachloride, CCl4, a glass and enter the electrodes without touching. Does the light bulb ?........... Does it conduct electricity in your state _{CCl 4} ?.......... NOT TIRES. I will use later.

2.d .- Put in another filter paper, copper sulfate, CuSO 4 , and introduces the electrodes. Does the light bulb? ........ Do you drive in your state electricity ?..........

COMMENTS MADE RECORD IN TABLE 2.

off switch POWER SUPPLY, SPRINGS ELECTRODES AND DISTILLED Laval.

3 .- Measurement of water solubility :

Place in clean glass, copper, Cu, another copper sulfate, CuSO 4 and the third got the carbon tetrachloride, CCl 4 . Add some distilled water. Will it dissolve copper, Cu? ........ Stirred with glass rod the glass of copper sulfate, CuSO 4 . Will it dissolve? ............ Wash the rod and shake the beaker containing CCl 4 . Will it dissolve ?.......... Noted in Table 2 the observations.

4 .- Measurement of conductivity in solution:

Install the electrodes, the switch activates the power source and electrodes put in contact to verify that successful installation. If the bulb lights, you can continue.

4.a. - Enter the electrodes in the vessel containing the solution of copper sulphate, CuSO4, without touching. Does the light bulb ?......... Does it conduct electricity in solution ?........

Wash the electrodes with distilled water and bring them into the vessel containing carbon tetrachloride, CCl 4 . Does it conduct electricity ?............ RECORD IN TABLE 2 Observations

switch disconnects the power supply, loose electrodes, rinse with distilled water, throw all reagents and clean well with soap all the material and the work table.

TABLE 2	Copper, Cu	copper sulphate, CuSO4	carbon tetrachloride
Fitness
Color and odor
Drive in its
Soluble in water
Drive in solution

The next Tuesday is the examination of unit 4, to study. Greetings