Chemistry Models
Science History
Decay Particles
Periodic Trends
Missing Pieces
Locating Electrons
2
What element is this? (Full name)
Argon
2
This is the scientist famous for the equation E=mc2
Albert Einstein
2
These decay particles are more energetic than x-rays, and they can penetrate any part of the human body.
Gamma rays
2
All of the elements in the Nitrogen family (5A) has how many valence electrons?
5 valence electrons
2
How many electrons are in a neutral fluorine atom?
9
2
What are the letters representing the four types of orbital?
s p d f
4
The majority of the elements on the periodic table are: metals, non-metals, metalloids
Metals
4
This Greek philosopher was the first one to posit that matter was only divisible to a point. He coined the term "atomos" meaning "uncut."
Democritus
4
This decay particle is the same as a helium nucleus.
Alpha particle
4
Which element is both the largest on the periodic table and has the weakest hold on its valence electron(s)?
Francium (#87)
4
How many neutrons are there in a hydrogen isotope with a mass of 3amu?
2
4
How many rings would a neutral Strontium (Sr) atom have in its ground state?
5 energy levels
6
Draw a Bohr model for neutral Phosphorus (P).
6
This is the site of the worst nuclear disaster in the United States.
Three Mile Island
Bonus: This is the new name that Microsoft gave the plant after buying it (+3 pts)
6
This anti-matter counterpart of an electron is the particle released during Beta+ decay.
Positron
6
Which family of elements has the most reactive metals on the periodic table?
1A, alkali metals
6
What is the name and atomic number of the element with an average atomic mass of 144.24amu?
Atomic Number: 60
Element: Neodymium
6
How many electrons are there in a calcium ion with a +2 charge?
18
8
Read from the graph: Your sample starts with a reading of 80 counts per minute. Based on this information, how many days is one half life?
2 days
8
Mr. Weimer is 35 years old. He was born closest to the founding of which of the following tech companies?
Google, Apple, TikTok, XM Satellite radio
XM Satellite radio (1988)
Google (1998), Apple (1976), TikTok (2016)8
Which decay particle would complete this nuclear equation?
Beta-particle
8
Which family of elements has the highest electronegativity:
Alkali Metals, Oxygen family, Halogens
Halogens
8
How many protons, neutrons, and electrons are in the following element?
p+ = 13 n = 14 e- = 10
8
What is the abbreviated electron configuration for SODIUM?
[Ne]3s1
10
If the following ion has a +3 charge, how many protons must it have?
16 protons
10
This is the last name of the guy who discovered the atomic nucleus by shooting alpha particles at a thin sheet of gold foil. (Hint: We did a lab to simulate this!)
Rutherford.
10
Write the complete equation for the alpha-decay of uranium-238.
U-238 -> He-4 + Th-234
10
Why are the Noble Gases considered the LEAST reactive of all families?
The outside energy level is completely full; there is no need to form bonds.
10
What percentage of a sample has already decayed after 4 half-lives? (Give exact percentage to two decimal places)
93.75% = (100 - 6.25)
10
What is wrong with the following electron configuration? Rewrite the full configuration correctly.
1s² 2s² 2p⁶ 3p8 4s²
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² (Calcium)