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Contains protons, neutrons, and electrons
Contains a small, dense nucleus
Has positrons and orbitals
Is a hard, indivisible sphere
A neutral nucleus is surrounded by one or more negatively charged electrons.
A neutral nucleus is surrounded by one or more positively charged electrons.
A positively charged nucleus is surrounded by one or more negatively charged electrons.
A positively charged nucleus is surrounded by one or more positively charged electrons.
Br, Ga, Hg
Cr, Pb, Xe
O, S, Se
N, O, F
Mass number, only
Atomic number, only
Both mass number and atomic number
Neither mass number nor atomic number
I2(s) and I2(g)
O2(g) and O3(g)
H2(g) and Hg(g)
H2O(s) and H2O(l)
Equally shared by two atoms
Unequally shared by two atoms
Transferred from the nucleus of one atom to the nucleus of another atom
Transferred from the valence shell of one atom to the valence shell of another atom
Energy is absorbed.
Energy is released.
The molecule creates energy.
The molecule destroys energy.
Water vapor forms snowflakes.
Table salt (NaCl) is crushed into powder.
Glucose (C6H12O6) and oxygen produce CO2 and H2O.
The gas particles are arranged in a regular geometric pattern.
The gas particles are in random, constant, straight-line motion.
The gas particles are separated by very small distances, relative to their sizes.
The gas particles are strongly attracted to each other.
Density at STP
Solubility in water
Lower energy and lower entropy
Lower energy and higher entropy
Higher energy and lower entropy
Higher entropy and higher entropy
Single replacement and decomposition
Single replacement and double replacement
Synthesis and decomposition
Synthesis and double replacement
50 000 J
I2 (s) → I2 (g)
CO2 (g) → CO2 (s)
2Na (s) + Cl2 (g) → 2NaCl (s)
2H2 (g) + O2 (g) → 2H2O (l)
A lower boiling point and a lower freezing point
A lower boiling point and a higher freezing point
A higher boiling point and a lower freezing point
A higher boiling point and a higher freezing point
The rate of dissolving is equal to the rate of crystallization.
The rate of dissolving is greater than the rate of crystallization.
The concentration of the solid is equal to the concentration of the solution.
The concentration of the solid is greater than the concentration of the solution.
Mg(s) + ZnCl2(aq)
Cu(s) + FeSO4(aq)
Pb(s) + ZnCl2(aq)
Co(s) + NaCl(aq)
Decreases by a factor of 2
Increases by a factor of 2
Decreases by a factor of 10
Increases by a factor of 10
Fission, mass converted to energy
Fission, energy converted to mass
Fusion, mass converted to energy
Fusion, energy converted to mass