CHEM FINAL Flashcards
1
Q
Charges on periodic table
A
+1,+2,+3, space , -3,-2,-1
2
Q
Ammonia
A
NH3 +
3
Q
Peroxide
A
O2 -2
4
Q
Mole bridge
A
mole, mass, particle, volume in L
5
Q
Exothermic reaction
A
energy is released
6
Q
Endothermic reaction
A
energy is absorbed
7
Q
Solute
A
gets dissolved into a solution
8
Q
Solvent
A
does the dissolving - water is universal solvent
9
Q
another variable other than temperature that can cause a substance to change state
A
pressure
10
Q
converting from Celsius to kelvin
A
T(k) = T(c) + 273.15
11
Q
Intensity vs. extensive property
A
intensive property doesn’t change when some is taken away. Extensive property does.
12
Q
how to calculate percent composition
A
Mw of element divided by the total molar weight or the molecule.
