問題一覧
1
a substance made of atoms
2
113
3
false
4
a combination of elements
5
Fe, o2, N2
6
true
7
8
8
proton, neutron, electron
9
a substance that helps a reaction but isn’t a reactant itself
10
8
11
carbon
12
false
13
electron is shared between atoms
14
false
15
true
16
it is an electrolyte and when dissolved has a positive and negative electrical charge
17
a liquid that has either a positive or negative charge
18
2 molecules split a electron so that they have 8 in the outer orbital
19
it’s electrically charged
20
formed from plants and animals that accumulate layers of sedements
21
false
22
distillation
23
false
24
the temperature at which a liquid boils and turns to vapor
25
false
26
carbon monoxide , carbon dioxide, unburned hydrocarbons, nitrogen and sulfur impurities
27
the measure of fuel stability
28
a substance that can speed up a reaction but isn’t a reactant itself
29
when metals such as iron and potassium interact with the catalyst
30
unleaded gasoline
31
yes, in paints people would smell it and get very sick
32
corn
33
to take the impurities out of a substance
34
density, smell, boiling point and purity
35
directly from distillation
36
benzene, ethane and butane
37
it is produced from a biomass and burns more cleanly
38
high costs, not that much corn in the world and low energy content
39
carbon dioxide and nitrogen impurities
40
compare their boiling points and evaporation rates
41
no exhaust, no emmison and stores battery
42
short driving ranges and long recharging
43
hydro, wind, solar, fossil fuels
44
conversion of the energy of motion into electricity rather than heat
45
advantage: better for the environment
46
heat can partially convert to work but work can fully turn to heat
47
food
48
one form of energy converted to another
49
energy cannot be created nor destroyed
50
oil
51
the energy in result of an objects position relative to another
52
the motion of atoms
53
the heat needed to raise the temperature of 1 gram of water to one 1 celcius
54
mechanical, thermal and chemical
55
water, heat, carbon dioxide
56
chemical bonds
57
in the form of heat or light
58
exothermic
59
true
60
set of chemical reactions that occur within a living organism
61
energy stored
62
joules
63
doing exercises, basal metabolism , dynamic action
64
carbs, fats and protein
65
hydro (97%)
66
hydro, solar, wind, fossil fuels
67
they involve changes in the neucleus
68
it transforms less stable nuclei into more stable
69
atomic bomb: fast and uncontrolled chain reaction and reactor is opposite
70
E= mc2
71
true
72
atomic nuclei spontaneously decay, releasing energy in the form of radiation
73
the amount of time it takes for half of the atoms to decay
74
true
75
.
76
neutrons produced by the splitting of atom strike
77
the manhattan project
78
to find illnesses and diseases
79
there’s plenty of room at the bottom
80
moores law
81
it will result in defects
82
thermal insulation, self cleaning windows
83
10
84
1989
85
top down , bottom up
86
true
87
carbon diamonds and nanotubes
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23問 • 1年前問題一覧
1
a substance made of atoms
2
113
3
false
4
a combination of elements
5
Fe, o2, N2
6
true
7
8
8
proton, neutron, electron
9
a substance that helps a reaction but isn’t a reactant itself
10
8
11
carbon
12
false
13
electron is shared between atoms
14
false
15
true
16
it is an electrolyte and when dissolved has a positive and negative electrical charge
17
a liquid that has either a positive or negative charge
18
2 molecules split a electron so that they have 8 in the outer orbital
19
it’s electrically charged
20
formed from plants and animals that accumulate layers of sedements
21
false
22
distillation
23
false
24
the temperature at which a liquid boils and turns to vapor
25
false
26
carbon monoxide , carbon dioxide, unburned hydrocarbons, nitrogen and sulfur impurities
27
the measure of fuel stability
28
a substance that can speed up a reaction but isn’t a reactant itself
29
when metals such as iron and potassium interact with the catalyst
30
unleaded gasoline
31
yes, in paints people would smell it and get very sick
32
corn
33
to take the impurities out of a substance
34
density, smell, boiling point and purity
35
directly from distillation
36
benzene, ethane and butane
37
it is produced from a biomass and burns more cleanly
38
high costs, not that much corn in the world and low energy content
39
carbon dioxide and nitrogen impurities
40
compare their boiling points and evaporation rates
41
no exhaust, no emmison and stores battery
42
short driving ranges and long recharging
43
hydro, wind, solar, fossil fuels
44
conversion of the energy of motion into electricity rather than heat
45
advantage: better for the environment
46
heat can partially convert to work but work can fully turn to heat
47
food
48
one form of energy converted to another
49
energy cannot be created nor destroyed
50
oil
51
the energy in result of an objects position relative to another
52
the motion of atoms
53
the heat needed to raise the temperature of 1 gram of water to one 1 celcius
54
mechanical, thermal and chemical
55
water, heat, carbon dioxide
56
chemical bonds
57
in the form of heat or light
58
exothermic
59
true
60
set of chemical reactions that occur within a living organism
61
energy stored
62
joules
63
doing exercises, basal metabolism , dynamic action
64
carbs, fats and protein
65
hydro (97%)
66
hydro, solar, wind, fossil fuels
67
they involve changes in the neucleus
68
it transforms less stable nuclei into more stable
69
atomic bomb: fast and uncontrolled chain reaction and reactor is opposite
70
E= mc2
71
true
72
atomic nuclei spontaneously decay, releasing energy in the form of radiation
73
the amount of time it takes for half of the atoms to decay
74
true
75
.
76
neutrons produced by the splitting of atom strike
77
the manhattan project
78
to find illnesses and diseases
79
there’s plenty of room at the bottom
80
moores law
81
it will result in defects
82
thermal insulation, self cleaning windows
83
10
84
1989
85
top down , bottom up
86
true
87
carbon diamonds and nanotubes