The Properties of the Solutions
English
Intermediate
This quiz presents some questions of medium difficulty on the properties of the solutions.
Description
30
Questions
1 min
Per question
5:35
Average time
3.0
Contest Score
6
Participants
Question 5: in the final verb of the options you should use "conduct electricity" (as you did in questions 6 and 7) instead of just "lead" (lead, as a verb, means "take the leadership" and you can't use it meaning conduct electricity);
Question 6: you talk about ionizable polar molecular compounds but the picture shows sodium chloride (NaCl) that is an ionic compound. It could be misleading and lead you to the wrong answer;
Question 13: a weak electrolyte dissolves depending on its dissociation constant that has a low value. That means that (as you said in the explanation) it doesn't dissociate completely but only partially. Since the value of the constant can vary between different compounds, how can you tell that "Weak electrolytes partially dissociate" is correct and "Weak electrolytes dissociate to a minimal extent" is not correct?
Question 21: you said that solubility increases with increasing temperature. In general it is true, but non always. There are few cases in which we have the opposite situation: the solubility decreases with increasing temperature. You can find an example in the picture you added in question 20: as you can see, the curve of Ce2(SO4)3 decreases with increasing temperature.
It would have been better if you had written "GENERALLY the solubility increases with increasing temperature";
Last aspect: sometimes you didn't add an explanation but just an emoticon. An emoticon. This is an educational quiz and I assume I'm going to learn something new from your quiz. How can I learn something if you doesn't add a single word, but just an emoticon??