Chapter 1
The study of the composition, structure, and properties of matter; the processes that matter undergoes; and the energy changes that accompany those processes best describes the science of
CHEMISTRY
Less than a Meter
is this quantitative or qualitative?
Qualitative
Why did J. J. Thomson reason that electrons must be a part of the atoms of all elements
Cathode rays are negatively-charged particles
What are quanta of light called
Photons
How are the frequency and wavelength of light related?
They are inversely proportional to each other.
Definition for Chemical?
Any substance that has a definite composition
What is the formula for Density?
D= m/v
Why is James Chadwick Important?
He discovered neutrons in 1932.
The letter "p" in the symbol 4p indicates the ____.
orbital shape
A negatively charged subatomic particle
neutrons
The branches that deals with substances containing carbon is called
ORGANIC CHEMISTRY
Put 879000 into to scientific notations
8.79 x 10^5
Select the correct symbol for an atom of tritium
3
H
1
If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?
counterclockwise
Who is Mendeleev and why is he so significant to chemistry?
He created the first periodic table, element 101 was named after him?
Gas pressure increasing? Physical or chemical change?
Chemical Change
Calcium chloride has a density of 2.50 g/ml. What is the volume of 7.48 g of the substance
( Do not forget the units and round to the 3rd significant figure)
18.7 ml
How do the isotopes hydrogen-1 and hydrogen-2 differ?
Hydrogen-2 has one neutron; hydrogen-1 has none.
What is the electron configuration of potassium?
1s^2 2s^2 2p^6 3s^2 3p^6 4s^1
draw the lewis structure for P and who is Henny Brand
He was responsible for the boiling his urine looking for Gold but found phosphorus
What are the 6 Branches of Chemistry
Organic
Biochemistry
Analytical
Physical
Inorganic
Theoretical
What is the density of a piece of cork that has a mass of 0.650 g and a volume of 2.71 ml?
( Do not forget the units and round to the 3rd significant figure)
0.240 g/ml
a. 2nd period, 5 valence electrons
b. 1 valence electron, 5th period
c. 3rd period, 7 valence electrons
d. 8 valence electrons, 6th period
b. Rubidium
c. Chlorine
d. Random
What is the frequency of ultraviolet light with wavelength 2.94 10 m? (c = 3.00 10 m/s)
1.02x 10^16s= V
list all the categories of the periodic table and give 1 example of an element with in
Alkali Metals, Alkaline Earth Metals, Transition Metal, Basic Metal, Halogen, nonmetal, Noble Gases, other metals, Lanthanide, Actinide