History of Chemistry
Parts of an Atom
Atomic Masses
What is Matter?
Random Chem Trivia
100
The earliest form of chemistry was called _______.
D) Alchemy The main difference between chemistry and alchemy are that chemistry is motivated by science, and alchemy is motivated by magical thinking.
100
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
100
If an atom was enlarged so the electrons were spinning around the stands of a football stadium, how big would the nucleus be? A) Baseball B) Soccer ball C) Car D) Marble
D) Marble
100
This is anything that takes up space
matter
100
Atomic numbers of an atom are the same as the number of ___in an atom
protons
200
People once thought that iron and lead could be transformed into this periodic element
what is Gold Metals like iron and lead were thought to be merely immature and undeveloped “early" versions of precious metals, like silver and gold.
200
These particles have a positive charge and are found inside the nucleus.
proton
200
Atomic masses are measured in these units
C) AMU
200
at their melting points solids undergo a phase change and become...
D) Liquids
200
Pouring a handful of salt into a full glass of water results in what change in water level...
Water level decreases
300
This man was the first to discover a reliable supply of elemental Phosphorus
B) Henning Brand In 1669, a German merchant called Henning Brand obtained elementary phosphorus through the distillation of urine
300
This scientist discovered the particle known as the neutron
A) James Chadwick
300
This particle carries a positive change and has a atomic weight of 1
What is a proton
300
Matter exists in four states
What are Solids, Liquids, Gases, and Plasma
300
What is the more Dangerous dihydrogen monoxide or Water
Neither, the chemical name for water (H2O) is dihydrogen monoxide.
400
"It is inherently impossible to know simultaneously both the exact momentum of the electron and its exact location in space."
D) Heisenberg Heisenberg's uncertainty principle states that the more precisely you measure one quantity, the less precisely you can know another associated quantity.
400
This experiment proved the existence of atomic nuclei
Rutherford's Gold Foil Experiment proved the existence of a small massive center to atoms, which would later be known as the nucleus of an atom.
400
A neutron has the atomic mass of what?
1
400
The phase change of particles from a solid state to gaseous state
Sublimation
400
This is the only letter that does not appear on the periodic table of elements
The only letter that doesn't appear on the periodic table is J.
500
This famous scientist was given credit for the first periodic table. He arranged his periodic table based on atomic weight and chemical reactivity.
B) Mendeleev Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
500
This scientist proved the existence of electrons and created the Plum pudding model
J. J. Thompson discovered the electron in 1897, which led him to later create a “plum pudding” model for the atom
500
What is the atomic mass of carbon A) 6.005 B) 12.01 C) 24.02 D) 48.04
B)12.01
500
In this state particles conform to the shape of the container it is in but fills the entire container
What is a Liquid
500
The sublimation of dry ice releases this gas into the air
What is CO2
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