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#		Thing	Description	Topic	For	Against	Net
51		Alpha Centauri	Star system in the Centaurus constellation	Physical sciences	0	0	0
52		Alpha particle	Ionizing radiation particle of two protons and two neutrons	Physical sciences	0	0	0
53		Alternating current	Electric current that periodically reverses direction	Physical sciences	0	0	0
54		Alum	Family of double sulfate salts of aluminium	Physical sciences	0	0	0
55		Aluminium	Chemical element with atomic number 13 (Al)	Physical sciences	0	0	0
56		Amalgam (chemistry)	Alloy of mercury with another metal	Physical sciences	0	0	0
57		Amber	Fossilized tree resin	Physical sciences	0	0	0
58		Americium	Chemical element with atomic number 95 (Am)	Physical sciences	0	0	0
59		Amine	Chemical compounds and groups containing nitrogen with a lone pair (:N)	Physical sciences	0	0	0
60		Ammonia	Chemical compound	Physical sciences	0	0	0
61		Ammonium nitrate	Chemical compound with formula NH4NO3	Physical sciences	0	0	0
62		Ammonium sulfate	Chemical compound	Physical sciences	0	0	0
63		Amorphous solid	Non-crystalline solid	Physical sciences	0	0	0
64		Amount of substance	Ratio of the number of particles in a sample to Avogadro's constant	Physical sciences	0	0	0
65		Ampere	SI base unit of electric current	Physical sciences	0	0	0
66		Amplitude	Measure of change in a periodic variable	Physical sciences	0	0	0
67		Analytical chemistry	Study of the separation, identification, and quantification of matter	Physical sciences	0	0	0
68		Andromeda Galaxy	Barred spiral galaxy in the Local Group	Physical sciences	0	0	0
69		Angular momentum	Conserved physical quantity; rotational analogue of linear momentum	Physical sciences	0	0	0
70		Antimatter	Material composed of antiparticles	Physical sciences	0	0	0
71		Antimony	Chemical element with atomic number 51 (Sb)	Physical sciences	0	0	0
72		Antiparticle	Particle with opposite charges	Physical sciences	0	0	0
73		Archipelago	Collection of islands	Physical sciences	0	0	0
74		Arcturus	Brightest star in the constellation Boötes	Physical sciences	0	0	0
75		Argon	Chemical element with atomic number 18 (Ar)	Physical sciences	0	0	0
76		Aromatic compound	Compound containing rings with delocalized pi electrons	Physical sciences	0	0	0
77		Arsenic	Chemical element with atomic number 33 (As)	Physical sciences	0	0	0
78		Artificial island	Island constructed by people	Physical sciences	0	0	0
79		Asbestos	Carcinogenic fibrous silicate mineral	Physical sciences	0	0	0
80		Astatine	Chemical element with atomic number 85 (At)	Physical sciences	0	0	0
81		Asteroid	Minor planet found within the inner Solar System	Physical sciences	0	0	0
82		Asteroid belt	Region between the orbits of Mars and Jupiter	Physical sciences	0	0	0
83		Astrometry	Branch of astronomy involving positioning and movements of celestial bodies	Physical sciences	0	0	0
84		Astronomical coordinate systems	System for specifying positions of celestial objects	Physical sciences	0	0	0
85		Astronomical object	Natural physical entity in space	Physical sciences	0	0	0
86		Astronomical unit	Mean distance between Earth and the Sun	Physical sciences	0	0	0
87		Astronomy	Scientific study of celestial objects	Physical sciences	0	0	0
88		Astrophysics	Subfield of astronomy	Physical sciences	0	0	0
89		Atmosphere	Layer of gases surrounding an astronomical body held by gravity	Physical sciences	0	0	0
90		Atmosphere of Earth	Gas layer surrounding Earth	Physical sciences	0	0	0
91		Atmospheric circulation	Process which distributes thermal energy about Earth's surface	Physical sciences	0	0	0
92		Atmospheric pressure	Static pressure exerted by the weight of the Earth's atmosphere	Physical sciences	0	0	0
93		Atmospheric science	Study of the Earth's atmosphere	Physical sciences	0	0	0
94		Atoll	Ring-shaped coral reef	Physical sciences	0	0	0
95		Atom	Smallest unit of a chemical element	Physical sciences	0	0	0
96		Atomic mass	Rest mass of an atom in its ground state	Physical sciences	0	0	0
97		Atomic nucleus	Core of an atom composed of nucleons	Physical sciences	0	0	0
98		Atomic number	Number of protons found in the nucleus of an atom	Physical sciences	0	0	0
99		Atomic orbital	Function describing an electron in an atom	Physical sciences	0	0	0
100		Atomic physics	Field of physics that studies the atom	Physical sciences	0	0	0

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