chem I unit test review
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
____
1. A term used to describe anything that has mass and takes up space is matter. _________________________
____
2. Most of the substances you see and use in everyday life are pure substances. _________________________
____
3. Substances containing two or more different elements chemically joined are called mixtures.
_________________________
____
4. The smallest particle of the element oxygen that retains the chemical identity of that element is a(n) molecule.
_________________________
____
5. The small dots pictured in the container below represent molecules of a substance. The substance is in the
solid phase. _________________________
____
6. Compared to the melting point of a solid, the freezing point is the same. _________________________
____
7. A solid’s ability to be pounded into thin sheets is called malleability. _________________________
____
8. A solid that may be stretched or bent and return to its original size and shape demonstrates ductility.
_________________________
____
9. Properties of materials that may be observed directly are referred to as physical properties.
_________________________
____ 10. The measure of a solid's ability to be stretched and then returned to its original size is called tensile strength.
_________________________
____ 11. The increase in volume that a solid experiences as it is heated is known as thermal expansion.
_________________________
____ 12. A solid with an orderly, repeating arrangement of particles may be called a(n) amorphous solid.
_________________________
____ 13. The component of a solution that is present in the greatest amount is called the solute.
_________________________
____ 14. A solution that is the same throughout would be considered heterogeneous. _________________________
Completion
Select the correct term to complete each sentence. There are extra terms in the list.
homogeneous
heterogeneous
pure substance
mixture
evaporation
absolute zero
more
less
melting point
solid
liquid
gas
boiling point
Celsius
Fahrenheit
15. A certain brand of cough syrup contains caramel, citric acid, FD&C red #40, flavoring, glucose, glycerine,
high fructose corn syrup, purified water, saccharin sodium and sodium benzoate. It is considered to be a
____________________.
16. Matter that cannot be separated into other types of matter by physical means would be called a(n)
____________________.
17. A mixture in which different samples are not necessarily made up of exactly the same proportions of matter is
a ____________________ mixture.
18. A mixture that contains more than one type of matter and is the same throughout is a ____________________
mixture.
19. The phases of matter which flow are both ________________ and _______________.
20. The temperature at which a solid changes to a liquid is called the _______________.
21. The cooling process that changes a liquid to a gas is called ____________________.
22. Most materials are ____________________ dense in their solid phase than in their liquid phase.
Select the correct term to complete each sentence. There are extra terms in the list.
physical
chemical
motion
more
less
density
weight
buoyancy
mass
Bernoulli’s
Archimedes
ductility
tensile strength
crystalline
amorphous
pascal
psi
streamlines
brittleness
malleability
pressure
23. Properties that can be observed only when one substance is changed into another are called
____________________ properties.
24. The ratio of mass to volume is known as ____________________.
25. Most materials are (more/less) ____________________ dense in their solid phase than in their liquid phase.
Water is a notable exception since solid ice is (more/less) ____________________ dense than liquid water.
26. A solid whose particles are arranged in a random way is said to a(n) ____________________ solid.
27. A measure of the stress due to pulling or tension that a material can withstand before breaking is called
____________________.
28. The tendency of a solid to break or crack when a force is applied is called ____________________.
Select the correct term to complete each sentence. There are extra terms in the list.
insoluble
dissolved
hydronium
alloy
supersaturated
saturated
lone pairs
soluble
solubility
greater than
less than
equal to
dissociation
solubility rules
hydroxide
29. When solute particles are evenly distributed throughout the solvent, the solute is described as being
____________________.
30. The amount of solute that will dissolve in a certain volume of solvent is called ____________________.
31. If a solute will not dissolve in a particular solvent, for that solvent the solute is considered
____________________.
32. At 25°C, 40 grams of table salt is added to 100 mL of water in a test tube. After the solution has been shaken,
some of the salt remains on the bottom of the test tube and will not dissolve because the solution is
____________________.
33. When a solvent contains more dissolved solute than it will hold under normal conditions, the solution is
considered to be _________________________.
34. Matter that always has exactly the same composition is classified as a(an) ____________________.
35. Pure substances are either ____________________ or ____________________.
36. An element has a fixed composition because it contains only one type of ____________________.
37. The substances in a(an) ____________________ mixture are evenly distributed throughout the mixture.
38. In a(an) ____________________ mixture, the parts of the mixture are noticeably different from one another.
39. Fresh milk is a suspension, but homogenized milk is a(an) ____________________.
40. If the particles in a mixture scatter light, the mixture is either a(an) ____________________ or a(an)
____________________.
Figure 2-1
41. Based on the information in Figure 2-1, the ____________________ point of nitrogen is 210.0ºC and the
____________________ point of nitrogen is 195.8ºC.
42. A(An) ____________________ change occurs when a material changes shape or size but the composition of
the material does not change.
43. ____________________ properties can be observed only when the substances in a sample of matter are
changing into different substances.
44. When a metal changes color because it has been heated, a(an) ____________________ change occurred.
When a metal changes color because it has reacted with another substance, a(an) ____________________
change occurred.
45. A(an) ____________________ has a definite volume and a definite shape.
46. Materials can be classified as solids, liquids, or gases based on whether their shapes and
____________________ are definite or variable.
47. The shape of a material remains constant when it is moved from one container to another. This material is
a(an) ____________________.
48. The phase change that is the reverse of deposition is ____________________.
49. Evaporation is the process that changes a substance from a liquid to a gas at temperatures below the
substance’s ____________________ point.
50. During a(an) ____________________ change, the system releases energy to its surroundings.
51. When sugar dissolves in water, water is the ____________________ and sugar is the
____________________.
52. Table salt is ____________________ soluble in cold water than it is in hot water.
chem I unit test review
Answer Section
MODIFIED TRUE/FALSE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
T
F, mixtures
F, compounds
F, atom
REF:
F, gas
REF:
T
REF:
T
REF:
F, elasticity REF:
T
REF:
F, elasticity REF:
T
REF:
F, crystalline REF:
F, solvent
REF:
F, homogeneous
REF:
REF:
REF:
section 8.1
section 8.1
section 8.3
section 10.2
section 10.2
section 10.2
section 10.2
section 10.2
section 10.2
section 21.2
REF:
section 8.1
section 8.1
section 8.1
section 21.2
COMPLETION
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
ANS: mixture
REF:
ANS: pure substance REF:
ANS: heterogeneous REF:
ANS: homogeneous REF:
ANS:
liquid, gas
gas, liquid
REF: section 8.3
ANS: melting point REF:
ANS: evaporation REF:
ANS: more
REF:
ANS: chemical
REF:
ANS: density
REF:
ANS: more, less
REF:
ANS: amorphous
REF:
ANS: tensile strength
ANS: brittleness
REF:
ANS: dissolved
REF:
ANS: solubility
REF:
ANS: insoluble
REF:
ANS: saturated
REF:
ANS: supersaturated REF:
section 8.1
section 8.1
section 8.1
section 8.1
section 8.3
section 8.3
section 8.3
section 10.1
section 10.1
section 10.1
section 10.2
REF:
section 10.2
section 21.2
section 21.2
section 21.2
section 21.2
section 21.2
section 10.2
34. ANS:
pure substance
substance
35. ANS: elements, compounds
36. ANS: atom
37. ANS: homogeneous
38. ANS: heterogeneous
39. ANS: colloid
40. ANS: suspension, colloid
41. ANS: melting, boiling
42. ANS: physical
43. ANS: Chemical
44. ANS: physical, chemical
45. ANS: solid
46. ANS: volumes
47. ANS: solid
48. ANS: sublimation
49. ANS: boiling
50. ANS: exothermic
51. ANS: solvent, solute
52. ANS: less