Experimental program, the advantages and disadvantages of the device to compare the general aspects of which to start (junior high school chemistry)

such as whether the air will be contaminated (the gas escaping the device will not be contaminated)

there are no safety bottles (high temperature or heating, pay special attention to the liquid will not be sucked back to make the high temperature glass tube \ test tubes explode)

there are no test devices

there are no ineffective (for example, in order to collect the dry CO2, anhydrous copper sulfate, add a clarified lime water after)

there are no effective (such as to collect the dry CO2, anhydrous copper sulfate after a clarified lime water)< /p>

Is that about it? The common use of questions should be these ˊ_> ˊ