Math & Chem
This type of zero never counts as significant
Leading
Volume
This scientist, who made use of cathode ray tubes, was responsible for the discovery of the electron.
JJ Thomson
This principle stipulates that electrons will tend to fill out lower energy orbitals first.
Aufbau principle
This quantity of a wave is inversely proportional to wavelength
Frequency
The symbol "u," which sounds like a famous Pokemon, is meant to convey a factor of this magnitude.
10-6
An object's density (mass/volume) is an example of an _______ property-one that depends only on the identity of the material
Intensive
78
The f subshell, which is the highest-energy subshell, is first seen in this shell.
n=4
To explain the photoelectric effect, scientists could no longer view light as strictly a wave. Instead, they had to view it as a beam of particles, each of which carry a quanta of energy. These quanta/particles are called ____.
Photons
There should be ___ sig figs in your final answer for this problem:
(930.)/(12.1+4)
2
Water, which is comprised of 2 hydrogen atoms and 1 oxygen atom, is an example of this type of pure substance.
Compound
Ernest Rutherford was able to make his key discovery about the atom's nucleus by firing these heavy, positively-charged particles at a thin sheet of gold foil.
Alpha
Periodic tables out!
The FULL electron configuration for silver (Ag) is ___
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10
When an electron transitions from n=3 to n=1, a photon is ______.
Emitted
1800 ng = ___ kg
Correct sig figs + proper sci notation required.
1.8 x 10-9
When ice melts into liquid water, a ______ change has occurred.
Physical
Pull up a periodic table!
The isotope, Carbon-14, has this many neutrons.
8
The noble gas configuration for scandium (Sc) is ___
[Ar] 4s2 3d1
Calculators out!
What is the wavelength of a laser beam that has an energy of 1.166 × 10–17 J? Express your answer in nm.
17 nm
1 mi=1609 m
3.2 mi = ___ cm?
Correct sig figs + proper sci notation required.
5.1 x 105
A solution is said to be a _________ mixture. In other words, it only has one phase.
Homogenous
Get your calculators and periodic tables ready!
One isotope of this particular element has a mass of 34.96885 and an abundance of 75.771%. The other isotope has a mass of 36.96590.
Chlorine
In terms of the two types of ions, sulfur will tend to become a/an ____
Anion
Calculators out!
An electron absorbs a photon with a wavelength of 486 nm to make an energy transition. What energy level transition did that electron make?
n=4: -0.136 x 10-18 J
n=3: -0.242 x 10-18 J
n=2: -0.545 x 10-18 J
n=1: -2.179 x 10-18 J
n=2 to n=4