vocabulary
neutrons in an atom
Misc. Questions
Density questions
vocabulary
100
what is the definition of isotope?
Atoms of the same element with numbers of neutrons.
100
Amount of neutrons in carbon-12
what is six neutrons?
100
The formula for finding the volume of a rectangular prism.
What is height times length times width?
100
A block has a mass of 20 g and a volume of 5 cm³. Find its density.
What is 4g/cm3?
100
Density
What is the amount of mass per unit volume?
200
What are the 4 sublevels ?
s, p, d, f
200
How much neutrons in 168O? 
What is 8 neutrons?
200
How much sig figs are in 1.000101?
What is seven sig figs?
200
A metal cube has a mass of 72 g and a volume of 8 cm³, find the density.
What is 9g/cm3?
200
Element
What is a pure substance that can't be broken down any further (no matter what) ?
300
Define unpaired electrons
An electron that occupies an orbital of an atom singly, rather than as part of an electron pair
300
An atom of x has a mass number of 23 and an atomic number of 11. How many neutrons does it contain, and what is the element?
What is 12 neutrons, and sodium.
300
Recall the formula for finding the density. How would you change it to find the mass instead?
What is DV=M?
300
A liquid has a mass of 135 g and occupies 30 mL. Find its density.
What is 4.5g/mL?
300
True or false, when atoms have the same element but with differing amounts of electrons, I am called an isotope.
What is false? (and if provided an explanation as to what an isotope is, earn double points instead)
400
what is a valence electron ?
Responsible for determining how elements bond with one another.
400
An isotope of Iron has 26 protons and a mass number of 58. How many neutrons does it have?
What is 32 neutrons?
400
Maximum capacity of the subshell d.
What is 10 electrons?
400
Find the volume of 39.657 g of bromine (density = 2.928 g/cm3)
What is 13.54mL?
400
Orbital
What is a three-dimensional mathematical function decribing the location and wave-like behavior of up to two electrons around an atomic nucleus ?
500
what is electron configuration and what are the 3 rules?
The arrangement of electrons in an atom. Aufbau principle, the Pauli's exclusions and Hund's rule
500
A neutral atom has 53 electrons and a mass number of 127. Identify the element and determine the number of neutrons.
What is iodine, and 74 neutrons.
Respek points 1000+ (Made by Matthew James Fewox)
500
Do carbon-12 and carbon-14 weigh the same?
What is no?
500
A rectangular prism measures 4 cm × 3 cm × 2 cm and has a mass of 144 g. Find its density.
What is 6g/cm3?
500
Aufbau's diagram and Pauli's Principal (answer both correct and get a 2x multiplier for points)
What is electrons tendency to fill the lower-energy atomic orbitals before higher-energy ones, and
what is... electrons habiting an orbital can only have two electrons within and they must have opposing spins?