Ch01
Student: ___________________________________________________________________________
1. Ammonia is a compound of nitrogen and hydrogen only. A certain gaseous combination of nitrogen and
hydrogen looks uniform throughout and has no smell. The combination is a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
2. A certain combination of hydrogen and oxygen gases has a definite composition and is liquid under
ordinary conditions in a room, but is not water. The combination is a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
3. A solid sample of a pure substance was heated in the open atmosphere, and a silver-colored solid resulted
that weighed 23% less than the original sample. Reheating produced no further change. Classify the
sample as a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
4. A certain sample of a pure liquid substance was heated in the open atmosphere, and a solid weighing 21%
more than the original sample resulted. Classify the solid as a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
5. When a certain sample of a substance is heated in air, it gains 5.90% in mass. The product is brown with
gray areas in it. Classify the product as a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
6. Which one of the following properties is not intensive?
A. density
B. boiling point
C. color
D. volume
7. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is homogeneous.
True False
8. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is heterogeneous.
True False
9. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is a compound?
True False
,10. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is an element?
True False
11. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance has a mass greater than that of the liquid.
True False
12. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance has a mass equal to that of the gas plus the liquid.
True False
13. How many elements are present in Si?
A. 1
B. 2
C. 3
D. 4
14. How many elements are present in SI2?
A. 1
B. 2
C. 3
D. 4
15. How many elements are present in NH4NO3?
A. 1
B. 2
C. 3
D. 4
E. 9
16. How many elements are present in NoCl2?
A. 1
B. 2
C. 3
D. 4
17. How many elements are present in NOCl?
A. 1
B. 2
C. 3
D. 4
18. How many elements are present in He?
A. 1
B. 2
C. 3
D. 4
19. How many elements are present in Co2(CO)9?
A. 1
B. 2
C. 3
D. 4
E. more than 4
,20. How many elements are present in CH3CH2OH?
A. 1
B. 2
C. 3
D. 4
E. more than 4
21. P is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. potassium.
F. carbon.
22. Au is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. oxygen.
F. silver.
23. C is the symbol for
A. cobalt.
B. cesium.
C. calcium.
D. gold.
E. chromium.
F. carbon.
24. Br is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. oxygen.
F. boron.
25. O is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. oxygen.
F. carbon.
26. Ca is the symbol for
A. cerium.
B. cobalt.
C. calcium.
D. gold.
E. oxygen.
F. carbon.
, 27. Select the symbol for potassium.
A. Ca
B. K
C. Mn
D. P
E. Po
F. Na
28. Select the symbol for copper.
A. Ca
B. K
C. Cs
D. Cu
E. Co
F. C
29. Select the symbol for sodium.
A. Ca
B. S
C. H
D. Cu
E. Si
F. Na
30. Select the symbol for nitrogen.
A. Ni
B. N
C. H
D. Nb
E. No
F. Na
31. Select the symbol for manganese.
A. Ca
B. Mg
C. H
D. Mn
E. M
F. Mo
32. Select the symbol for hydrogen.
A. Hy
B. N
C. H
D. Cu
E. He
F. Hi
33. Select the symbol for cobalt.
A. Ca
B. Cs
C. C
D. Cu
E. Co
F. Na
Student: ___________________________________________________________________________
1. Ammonia is a compound of nitrogen and hydrogen only. A certain gaseous combination of nitrogen and
hydrogen looks uniform throughout and has no smell. The combination is a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
2. A certain combination of hydrogen and oxygen gases has a definite composition and is liquid under
ordinary conditions in a room, but is not water. The combination is a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
3. A solid sample of a pure substance was heated in the open atmosphere, and a silver-colored solid resulted
that weighed 23% less than the original sample. Reheating produced no further change. Classify the
sample as a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
4. A certain sample of a pure liquid substance was heated in the open atmosphere, and a solid weighing 21%
more than the original sample resulted. Classify the solid as a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
5. When a certain sample of a substance is heated in air, it gains 5.90% in mass. The product is brown with
gray areas in it. Classify the product as a(n)
A. element.
B. compound.
C. heterogeneous mixture.
D. homogeneous mixture.
6. Which one of the following properties is not intensive?
A. density
B. boiling point
C. color
D. volume
7. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is homogeneous.
True False
8. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is heterogeneous.
True False
9. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is a compound?
True False
,10. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance is an element?
True False
11. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance has a mass greater than that of the liquid.
True False
12. A solid, black substance is heated in the absence of air, producing a colorless gas and a silvery liquid. The
substance has a mass equal to that of the gas plus the liquid.
True False
13. How many elements are present in Si?
A. 1
B. 2
C. 3
D. 4
14. How many elements are present in SI2?
A. 1
B. 2
C. 3
D. 4
15. How many elements are present in NH4NO3?
A. 1
B. 2
C. 3
D. 4
E. 9
16. How many elements are present in NoCl2?
A. 1
B. 2
C. 3
D. 4
17. How many elements are present in NOCl?
A. 1
B. 2
C. 3
D. 4
18. How many elements are present in He?
A. 1
B. 2
C. 3
D. 4
19. How many elements are present in Co2(CO)9?
A. 1
B. 2
C. 3
D. 4
E. more than 4
,20. How many elements are present in CH3CH2OH?
A. 1
B. 2
C. 3
D. 4
E. more than 4
21. P is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. potassium.
F. carbon.
22. Au is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. oxygen.
F. silver.
23. C is the symbol for
A. cobalt.
B. cesium.
C. calcium.
D. gold.
E. chromium.
F. carbon.
24. Br is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. oxygen.
F. boron.
25. O is the symbol for
A. phosphorus.
B. bromine.
C. calcium.
D. gold.
E. oxygen.
F. carbon.
26. Ca is the symbol for
A. cerium.
B. cobalt.
C. calcium.
D. gold.
E. oxygen.
F. carbon.
, 27. Select the symbol for potassium.
A. Ca
B. K
C. Mn
D. P
E. Po
F. Na
28. Select the symbol for copper.
A. Ca
B. K
C. Cs
D. Cu
E. Co
F. C
29. Select the symbol for sodium.
A. Ca
B. S
C. H
D. Cu
E. Si
F. Na
30. Select the symbol for nitrogen.
A. Ni
B. N
C. H
D. Nb
E. No
F. Na
31. Select the symbol for manganese.
A. Ca
B. Mg
C. H
D. Mn
E. M
F. Mo
32. Select the symbol for hydrogen.
A. Hy
B. N
C. H
D. Cu
E. He
F. Hi
33. Select the symbol for cobalt.
A. Ca
B. Cs
C. C
D. Cu
E. Co
F. Na
