chemistry quiz

I had participate in the chemistry quiz.I think i shouldn't join so because i do think i fail to do it badly.Day before the quiz,my friend show me the past year quiz question.It was as easy as ABC.That time i think that i will score at least credit.When the time quiz,the question was tough,couldn't understand most question.But i struggle to think and try my best to understand and answer those question.I couldn't finished all question on time.The rest that i have mot done i just simply put on the answer and these question have to depends on my luck already.Whatever,no matter how bad i score for this quiz but i still get a certificate and some addition points on my curriculum.I don't think most of us can score good marks because everyone was complaining tough.