When you mix acid with water, which solution do you add first?
Always add the acid to the water
200
the energy required to remove one mole of the most loosely held electrons from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of 1+.
First ionization energy
200
What type of solid is a diamond?
Network covalent solid
200
What do you call substances that slightly break up into ions in a solution?
weak electrolytes
200
The portion of the universe we focus on is called the
system
200
a substance that changes color in the presence or absence of a concentration of a chemical species
an indicator
300
The modern periodic table is organized based on
atomic number: the number of protons in the nucleus and the number of electrons around the nucleus
300
What is produced when ionic solids are introduced to water?
ions
300
What color is the permanganate ion?
purple
300
The amount of heat needed to change 1 gram of a substance by 1°C is called
the specific heat
300
a technique where a solution of known concentration is used to determine the concentration of an unknown solution
Titration
400
What is the electron configuration for copper?
[Ar] 4s^1 3d^10
Because the 3d orbital is larger than the 4s orbital and the 3d orbital only needs one more electron to be filled, the 3d orbital pulls an electron from the 4s orbital to fill the empty space
400
What is the bond angle of a tetrahedral?
109.5 degrees
400
Name an ion that is NEVER soluble
CO32–, SO32–, S2–, PO43–
400
At 298K, if a system has a delta H of 0 and a positive delta S, what is the sign of delta G and is the reaction spontaneous?
delta G is negative and the reaction is spontaneous
400
Analysis of the interaction between matter and any portion of the electromagnetic spectrum is called
spectroscopy
500
Why is the first ionization energy for aluminum less than the first ionization for magnesium?
Electrons in 3s orbital are more strongly bounded to the nucleus but the electrons in 3p have a less shielding effect due to which the electron is less strongly bound to the nucleus.
500
What is the hybridization of a molecule with a trigonal bipyramidal structure?
s^2 p^3
500
During metathesis what does H2CO3 turn into?
H2CO3 → CO2(g) + H2O
500
If ∆G° > 0, then will the reverse or forward reaction proceed to reach equilibrium?