3. Now that you have experienced both techniques, compare and contrast melting point determination and TLC as methods for detecting impurities in a solid sample? Explain your answer.

Follows are the solution to this question:

Explanation:

In the given question, throughout the situation of the melting temperature from its value, they might assume that all this sampling frame is unclean but could not tell how often impure particulates as TLC could be used to confirm the location as well as the number of impure particulates as well. This process is mainly used for a mixture analysis by separating, that combined components.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6