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Chemistry BJU CH. 1 & 2 Flashcards | StudBud
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Chemistry BJU CH. 1 & 2
Chemistry BJU CH. 1 & 2
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1
pure water
polyatomic element
compound
homogeneous mixture
heterogeneous mixture
2
Melts in a very hot flame
chemical property
physical property
3
How many atoms of sulfur are present in 2Al
2
(SO
4
)
3
?
3
6
1
12
4
Everything in the material universe is composed of chemicals.
True
False
5
The amount of matter packed into a given volume determines its
mass
color
ductility
density
6
All of matter can be divided into two categories, pure substances and
mixtures
impure substances
compounds
none of these
7
A log burns and evaporates water in a kettle. What kind of change does this exhibit?
neither physical nor chemical
both chemical & physical
chemical
physical
8
This type of mixture, like orange juice, has to be shaken because they are suspensions and can settle out.
soluble
heterogeneous
insoluble
homogeneous
9
sweetened tea
compound
homogeneous mixture
polyatomic element
heterogeneous mixture
10
The scientific method, when used properly, can lead a person to determine absolute truth.
False
True
11
Arguments from general, accepted statements called premises to more specific conclusions.
neither form of reasoning
inductive reasoning
faulty reasoning
deductive reasoning
12
Vaporizes at 3000 degrees C
chemical property
physical property
13
chocolate bar with nuts
homogeneous mixture
compound
diatomic element
heterogeneous mixture
14
A detailed qualitative and quantitative analysis of a material would most often be described as what kind of chemistry.
inorganic
spectroscopic
analytical
organic
15
Scientific _______ are physical, descriptive, or mathematical representations that characterize a system.
laws
models
theories
observations
16
The Greeks desired knowledge rather than practical skills.
True
False
17
Oxygen (O
2
) is a
monatomic element
polyatomic element
heterogeneous mixture
diatomic element
18
iron, Fe
heterogeneous mixture
monatomic element
homogeneous mixture
compound
19
A charged atoms is called a(n)
ion
compound
isotope
element
20
What kind of change results in a new substance being formed?
chemical
molecular
physical
elemental
21
The Creation Mandate is given in the book of
Psalms
Luke
Genesis
Revelation
22
Rusts in humid air
physical property
chemical property
23
The term science comes from the Latin word for
brain
first
knowledge
reason
24
Hydrogen peroxide (H
2
O
2
) is a
polyatomic element
homogeneous mixture
compound
diatomic element
25
Chemistry is the study of chemicals; that is, the study of all energy and the changes that it undergoes.
False
True
26
The mass of a crystal as measured on a balance would be an example of what kind of data.
quantitative
qualitative
deductive
subjective
27
Qualitative descriptions do not usually involve the use of numbers.
True
False
28
In the formula Mg(OH)
2
, the numeral 2 is called a
subscript
base number
superscript
coefficient
29
Produces a gas when mixed with an acid
chemical property
physical property
30
What is a scientific hypothesis?
general, inductive approach to discovering truth
scientific law
simple, testable statement of a prediction based on available information
previously established fact
31
Dry ice has a temperature of 196 K. What is the temperature of dry ice on the Celsius scale?
-92 C
-77 C
-95 C
-71 C
32
Which of the following is not one fo the six common forms of energy?
chemical
laser
mechanical
nuclear
33
Oxygen, O
2
polyatomic element
diatomic element
monatomic element
homogeneous mixture
34
How many hydrogen atoms are in this chemical formula? 2H
2
O
3
4
1
2
35
Which of the following is not a type of qualitative data?
mass
hardness
texture
color
36
Arguments that begin with known facts and proceed to general conclusions.
neither form of reasoning
faulty reasoning
deductive reasoning
inductive reasoning
37
Ozone, O
3
polyatomic element
heterogeneous
compound
diatomic element
38
Which of these is a physical property?
will corrode in a presence of an acid
magnetic
explosive
reacts violently with water
39
The temperature outside is 87 degrees F. What is that temperature in degrees C?
47
31
42
35
40
Matter is anything that occupies space and has mass.
True
False
41
Which of these is not a physical property?
flammable
colorless
poor conductor of electricity
freezes at 21.15 degrees C
42
The amount of energy required to raise the temperature of 1 gram of water 1 degree Celsius is defined as a
kilocalorie
calorie
Calorie
BTU
43
The freezing point of nitrogen is -210 degrees C. What could that temperature be in kelvins?
148 K
63 K
-63 K
483 K
44
What is the name given to an inductive approach to finding information about our universe?
theory
hypothesis
experimentation
scientific method
45
What are the smallest basic particles of an element?
atoms
ions
electrons
molecules
