matter and change

1. Chapter 1 Review

2. What type of chemistry would
determine the chemical process of
cellular respiration?

3. What type of chemistry would
determine the exact composition of a
rock sample?

4. What type of chemistry would
determine the best separation
technique for an oil sample (oils are
mostly carbon chains)?

5. What type of research is being
performed if a group of scientists want
to know the possible reactions with the
element lithium?

6. What type of research is being
performed the lithium study resulted in
finding a new medication to treat
psychological issues?

7. A) option a
B) option b
C) option c
D) option d
E) option e
Which best represents a homogeneous mixture of an element and a compound?

8. A) option a
B) option b
C) option c
D) option d
E) option e
Which best represents a gaseous compound?

9. A) option a
B) option b
C) option c
D) option d
E) option e
Which best represents a solid element?

10. A) option a
B) option b
C) option c
D) option d
E) option e
Which best represents a heterogeneous mixture of two elements?

11. A) filtration
B) chromatography
C) distillation
D) vaporization
E) homogenization
A method of separation that employs a system
with two phases of matter, a mobile phase
and a stationary phase, is called

12. A) Solutions are always homogeneous mixtures.
B) The terms “atom” and “element” can have different
meanings.
C) Elements can exist as atoms or molecules.
D) Compounds can exist as atoms or molecules.
E) At least two of the above statements (A-D) are false.
Which of the following statements is false?

13. A) elements
B) compounds
C) pure water
D) carbon dioxide
E) all of these
An example of a pure substance is

14. A) homogeneous mixture
B) heterogeneous mixture
C) pure mixture
D) compound
E) distilled mixture
A solution is also called a

15. Name three methods for the
separation of mixtures.

16. Give three physical methods used by
chemists to separate mixtures and
identify the type of mixture best suited
for each process.

17. Which of the following is an extensive
property?
a) density
b) chemical composition
c) mass
d) boiling point

18. Which of the following is a chemical
change?
a) sublimation
b) chromatography
c) boiling higher than standard boiling
point
d) burning

19. What are the horizontal rows on the
periodic table called?
a) periods
b) families
c) groups
d) representative elements