問題一覧
1
Matter, its composition, properties, and transformations
2
Prediction
3
Hypothesis
4
To test the hypothesis
5
Analysis
6
The hypothesis is revised or rejected
7
Experiment
8
To ensure the validity of experimental results
9
Further investigations
10
Notice something of interest or identify a problem
11
Solid, Liquid, Gas, Plasma
12
Plasma
13
Solid
14
High compressibility
15
Liquid
16
Plasma
17
Solid
18
Liquid crystal
19
Extreme conditions
20
Liquid
21
Particles vibrate about a fixed position
22
Liquid, Gas, Plasma
23
Plasma is made of ions and electrons
24
Variable volume
25
Understanding deviations in properties like pressure, temperature, and specific heat
26
A fundamental building block of matter made up of atoms with the same number of protons.
27
By chemical reactions.
28
A combination of two or more elements or compounds physically mixed together.
29
Filtration, Distillation, Magnetism
30
It is composed of two or more elements in a fixed and definite proportion.
31
Density
32
They are defined by what chemical changes a substance can undergo.
33
Color, Mass, Conductivity, Volume
34
gram (g), kilogram (kg), pound (lb)
35
mega (M)
36
Volume
37
1,000 grams, 1000 g
38
Temperature, Pressure
39
Celsius (°C), Kelvin (K), Fahrenheit (°F)
40
1 mL = 1 cm³
41
nano (n)
42
g/mL, g/cm³, kg/m³
43
micro (u)
44
Mass, Volume, Total energy
45
3.8 L, 3.8 liters
46
1 g = 1,000 mg
47
Physical property
48
10^3
49
Density, Boiling point, Flammability
50
Intensive properties do not depend on the amount of substance; extensive properties do.
51
Mass, Volume, Surface area
52
Because it is independent of the amount of substance, Because it reflects the substance's inherent characteristics
53
An intensive property
54
A process that alters the physical properties of a substance without changing its chemical composition.
55
Melting of ice, Evaporation of water, Tearing of paper
56
They remain the same; only physical properties change.
57
Rusting iron, Burning wood, Digesting food
58
Because it results in new substances with different chemical properties.
59
Dissolving salt in water
60
Chemical changes produce entirely new substances.
61
The formation of products with different compositions from the original substances.
62
A physical change where H2O changes from liquid to gas.
63
They create products with different chemical compositions that cannot easily return to their original state.
64
78%
65
Argon
66
Neon
67
Oxygen
68
Mercury (Hg)
69
Vapor
70
Carbon monoxide (CO)
71
Krypton
72
Other gases (1%)
73
A gas is a substance that is gaseous at ordinary temperatures and pressures.
74
760 mm of mercury, 101.3 kPa, 1 atm
75
Kelvin uses only positive values, which prevents inaccurate results.
76
0°C = 273.15 K and 1 bar
77
The weight of the air above us
78
To have a set of standard conditions for comparing different gases
79
atmosphere, torr, Pascal, bar
80
760
81
Pascal
82
1,000
83
Celsius and Kelvin
84
liter, milliliter
85
101,325
86
mole
87
grams
88
1 mL = 1 cm3
89
Pressure increases
90
increases
91
Temperature and pressure
92
It increases
93
Pressure and volume
94
The volume decreases
95
Charles's Law
96
Pressure decreases
97
Boyle's Law
98
Temperature and mass
99
1,300 mL
100
1.48 atm
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126問 • 3ヶ月前問題一覧
1
Matter, its composition, properties, and transformations
2
Prediction
3
Hypothesis
4
To test the hypothesis
5
Analysis
6
The hypothesis is revised or rejected
7
Experiment
8
To ensure the validity of experimental results
9
Further investigations
10
Notice something of interest or identify a problem
11
Solid, Liquid, Gas, Plasma
12
Plasma
13
Solid
14
High compressibility
15
Liquid
16
Plasma
17
Solid
18
Liquid crystal
19
Extreme conditions
20
Liquid
21
Particles vibrate about a fixed position
22
Liquid, Gas, Plasma
23
Plasma is made of ions and electrons
24
Variable volume
25
Understanding deviations in properties like pressure, temperature, and specific heat
26
A fundamental building block of matter made up of atoms with the same number of protons.
27
By chemical reactions.
28
A combination of two or more elements or compounds physically mixed together.
29
Filtration, Distillation, Magnetism
30
It is composed of two or more elements in a fixed and definite proportion.
31
Density
32
They are defined by what chemical changes a substance can undergo.
33
Color, Mass, Conductivity, Volume
34
gram (g), kilogram (kg), pound (lb)
35
mega (M)
36
Volume
37
1,000 grams, 1000 g
38
Temperature, Pressure
39
Celsius (°C), Kelvin (K), Fahrenheit (°F)
40
1 mL = 1 cm³
41
nano (n)
42
g/mL, g/cm³, kg/m³
43
micro (u)
44
Mass, Volume, Total energy
45
3.8 L, 3.8 liters
46
1 g = 1,000 mg
47
Physical property
48
10^3
49
Density, Boiling point, Flammability
50
Intensive properties do not depend on the amount of substance; extensive properties do.
51
Mass, Volume, Surface area
52
Because it is independent of the amount of substance, Because it reflects the substance's inherent characteristics
53
An intensive property
54
A process that alters the physical properties of a substance without changing its chemical composition.
55
Melting of ice, Evaporation of water, Tearing of paper
56
They remain the same; only physical properties change.
57
Rusting iron, Burning wood, Digesting food
58
Because it results in new substances with different chemical properties.
59
Dissolving salt in water
60
Chemical changes produce entirely new substances.
61
The formation of products with different compositions from the original substances.
62
A physical change where H2O changes from liquid to gas.
63
They create products with different chemical compositions that cannot easily return to their original state.
64
78%
65
Argon
66
Neon
67
Oxygen
68
Mercury (Hg)
69
Vapor
70
Carbon monoxide (CO)
71
Krypton
72
Other gases (1%)
73
A gas is a substance that is gaseous at ordinary temperatures and pressures.
74
760 mm of mercury, 101.3 kPa, 1 atm
75
Kelvin uses only positive values, which prevents inaccurate results.
76
0°C = 273.15 K and 1 bar
77
The weight of the air above us
78
To have a set of standard conditions for comparing different gases
79
atmosphere, torr, Pascal, bar
80
760
81
Pascal
82
1,000
83
Celsius and Kelvin
84
liter, milliliter
85
101,325
86
mole
87
grams
88
1 mL = 1 cm3
89
Pressure increases
90
increases
91
Temperature and pressure
92
It increases
93
Pressure and volume
94
The volume decreases
95
Charles's Law
96
Pressure decreases
97
Boyle's Law
98
Temperature and mass
99
1,300 mL
100
1.48 atm