C1: Quiz 4 – Answers
1) A compound is a substance that involves 2 or more different elements in fixed proportions that are chemically bonded to each other
2) H2O is a compound as it involves 2 or more different elements in fixed proportions that are chemically bonded to each other
3)
a) 2
b) 3
c) 5
4)
a) 12
b) 6
c) 24
1) What is a compound?
2) We have the three substances below.
C , H2O , O2
Which of the three substances above is a compound and why?
3) Iron oxide is Fe2O3.
a) How many iron atoms are there in a single molecule of iron oxide?
b) How many oxygen atoms are there in a single molecule of iron oxide?
c) How many atoms are there in total in a single molecule of iron oxide?
4) Glucose is C6H12O6.
a) How many hydrogen atoms are there in a single molecule of glucose?
b) How many carbon atoms are there in a single molecule of glucose?
c) How many atoms are there in total in a single molecule of glucose?