WorksheetsCHEMISTRY_QUIZ_PELIN_ULUKAN
Total questions: 10
Worksheet time: 3600secs
Ammonia gas NH3 can be obtained by heating together the solids NH4Cl and Ca(OH)2. In addition to NH3, CaCl2 and H2O are formed as by-products.
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
When a mixture containing 15.0 gr each of NH4Cl and Ca(OH)2 is heated and 3.82 gr. NH3 is obtained, calculate per cent yield?
Mol wt of NH4Cl: 53.49 gr/mol
Mol wt of Ca(OH) 2: 74.09 gr/mol
Mol wt of NH3: 17.03 gr/mol
60%
70%
80%
90%
Which of the following salt is acidic?
LISTS OF STRONG ACIDS: HCl, HBr, HI, HClO4, HNO3, H2SO4
LIST OF STRONG BASES: LiOH, NaOH, KOH, RbOH, CsOH, Mg(OH)2, Ca(OH)2, Sr(OH) , Ba(OH)2
Na2SO4
NH4NO3
K2CO3
KCl
100 gr of ice at – 20 oC is mixed with m gram of warm water at 50 oC. Final temperature was determined as 10 oC. Calculate the amount of warm water?
Specific heat of ice c ice: 0.5 cal/gr oC
Specific heat of fusion of ice Hf: 80 cal/gr
Specific heat of water c water: 1 cal/gr oC
150 g
200 g
250 g
300 g
Describe your research topic in a paragraph with at least 300 words. Your paragraph should include answers to the questions below;
1. What is the main goal of your research topic
2. How long have you been working on this?
3. Do you have any collaborations in this research study?
Describe one the experiments you have done with the precipitation, filtration and heating processes.
Fill in the blank by writing the NAME of the definition given below.
--------- are substances which are obtained in a chemical reaction.
(a)
Fill in the blanks by writing the NAME of the definition given below.
-------- is a substance which is made up of two or more different kind of elements.
(a)
Which of the following topics are subtopics of chemistry?
organic chemistry
physical chemistry
analytical chemistry
linear algebra chemistry
Which are of the following processes are chemical changes?
odor change
color change
pH change
melting point change
Do you think that this quiz fully covers the concepts you have learned in chemistry lessons? How many percentage of this quiz includes the concepts in your courses.
40 %
50 %
75 %
100 %
