Unit 1
Three different properties that a material can be categorized as.
Mechanical, Electrical, Thermal, Magnetic, Optical, Deteriorative (Chemical)
The three particles that make up an atom
protons, neutrons, electrons
The oxidation numbers for
1). O2
2). NH4Cl
1). 0
2). N: -3 H: +1 Cl: -1
The main difference between a scalar and a vector.
A vector has direction (i.e. - an angle)
The spherical mirror that only creates virtual images.
Convex mirror
What is x2/3 in a rational/root form
cube root of x2
The two major types of chemical bonding and their description of bonding.
Ionic Bonding - Metal and Non-Metal
Covalent Bonding - Non-Metal and Non-Metal
In a galvanic cell, this is what drives the flow direction of electrons.
electronegativity
The sum of the two following vectors
A = 8i + 7k
B = -9i +6j
A+B = -1i + 6j + 7k
A ball with a mass of 300 g is sitting on the ground. What is the force it applies to the ground?
F = 2.943 N
Convert 20 kg/km3 to g/m3
2 x 10-5 g/m3
Full and noble gas electron configuration for Vanadium (V)
1s2 2s2 2p6 3s2 3p6 4s2 3d3
Both half reactions for
Na + Cl --> NaCl
Label which is reduction and which is oxidation.
Oxidation: Na0 --> Na+ + 1e-
Reduction: Cl0 + 1e- --> Cl-
The dot product of
A = 3i + 4j + 8k
B = 2i + 1j + 1k
A.B = 18
What is the index of refraction of a liquid if the angle of incidence in air is 35o and the angle of refraction is 14o.
nliquid = 2.37
A 1.5276g sample of CdCl2 underwent an electrolytic process separating all of the cadmium (Cd) from the sample. The weight of the metallic cadmium was 0.9367g. If the atomic mass of chlorine is 35.45 g/mol, what is the atomic mass of Cd from the experiment?
112.41 g/mol
The 4 quantum numbers AND their constraints.
n - principal (n > 1)
l - shape of the orbital (l = 0 to n-1)
ml - orientation of the orbital (ml = -l to l)
ms - spin number (ms = -1/2 or 1/2 only)
What mass of calcium hydroxide {Ca(OH)2} must dissolve in 850 mL of water to make a 2.4 M solution?
151.2 grams Ca(OH)2
An object is moving at a velocity of 13 m/s. It accelerates to a velocity of 25 m/s over a time of 8 s. What acceleration did it experience?
a = 1.5 m/s2
A 10kg ball moving at 13m/s strikes a 20kg ball at rest. After the collision the 10kg ball is moving with a velocity of 7m/s. What is the velocity of the second ball?
3 m/s
Identify the limiting reagent when 25 g of nitrogen reacts with 25 g of hydrogen. How many grams of ammonia gas are formed in this reaction?
N2 + H2 --> NH3
N2 is limiting reagent
30.4 g NH3
What is the density of gold (Au)? It crystallizes in an FCC lattice and has a unit cell length of 407 pm.
19.4 g/cm3
The vapor pressure of pure water is 23.80 torr at 25.0 °C. If 0.140 mol of a solute is dissolved in 180 g of water, what is the vapor pressure of the resulting solution?
Hint: when calculating, keep at least 4 digits after the decimal place until the final answer
23.47 torr
The cross product of
A = 1i + 3j + 5k
B = 2i + 4j + 6k
A x B = -2i + 4j - 2k
Bobby places a light bulb a distance of 36.2 cm from a concave mirror. If the mirror has a focal length of 19.2 cm, then what is the image distance?
si = 40.9 cm