general chemisty
measurement
Atomic structure
Physical/Chemical
Bonding
100
How do inorganic chemistry and organic chemistry differ?
Organic Chemistry is the study of chemicals with carbon.
100
Convert 8.13 cm to meters
.0813 Meters
100
What are the proton and electron of Cs, Ag, Cd, Se?
55, 47, 43, 34
100
Why does helium float?
The density of helium is greater than air.
100
State the number of electrons either lost or gained. Br-
Gain of one electron
200
4.5 g/cm and a volume of 4.3 cm3
1.05 g
200
What does 5 in 3d5 indicate?
The number of electrons in the 3d sublevel
200
State whether it is a chemical or physical change: Melting of Iron.
Physical
200
How many electrons must each atom loose to attain a noble gas electron configuration? Ca
Two
300
Find the percent error if the literature value is 19.3 g/ml and the lab value is 20.3 g/ml.
5.2%
300
How would you distinguish between a homogeneous mixture and a compound?
A compound has a constant composition and the composition of a mixture can vary.
400
What is the name given to a chemist who studies the composition of matter?
An analytical chemist
400
7.7 liters of gasoline. Assume the density of gasoline to be 0.68 g/cm3.. Find the density.
D = 385 g/cm3
400
How many electrons are in the 2p sublevel of Li?
0
400
How do isotopes of an atom differ?
Isotopes have different number of electrons
500
Is a page of a textbook homogenous or heterogenous?
Heterogenous
500
The mass of an atom should be very neatly the sum of the masses of its protons and neutrons. The mass of a proton and the mass of a neutron are very close to 1 amu. Why is the atomic mass of chlorine, 35.453 amu, so far from a whole number?
Because they have different isotopes and they have different abundances.
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