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Atoms
Such a Bohr
Molars are not just Teeth
What's a Matter?
Misc.
100
This particle is negatively charged.
What is electron?
100
In Bohr's model, this many electrons are located on the second energy level.
What is eight?
100
This is the basic unit used to measure the amount of a substance.
What is a mole (mol)?
100
These are the four states of matter.
What are solid, liquid, gas, and plasma.
100
This graph is used to demonstrate change over time.
What is a line graph?
200
In a neutral atom, the number of these two types of particles are equivalent (or the same).
What are electrons and protons?
200
Electrons must do this to go from energy level one to energy level two.
What is gain a photon (or energy)?
200
One mole is equal to 602,213,670,000,000,000,000,000 particles, which is also known as this number.
What is Avogadro's Number?
200
Melting is an example of this type of change.
What is physical change?
200
This type of variable is controlled by the scientist in an experiment.
What is independent variable?
300
This type of number is unique to each element.
What is the atomic number?
300
The region around the nucleus which an electron is most likely to be, is known as this.
What is orbital?
300
The molar mass of hydrogen is this.
What is 1.01 g/mol?
300
A change in odor typical suggest this type of change has occurred.
What is chemical change?
300
A sample of water from the bayou is an example of this type of mixture.
What is a heterogeneous mixture?
400
Atoms of a single element that have different numbers of neutrons are this.
What are isotopes?
400
If an atom contains nine electrons, than the electrons are located in these energy levels.
What are energy levels 1 and 2?
400
The molar mass of CH4 is this number.
What is 16.05 g/mol?
400
A substance made up of atoms of two or more different elements joined by chemical bonds.
What is a compound?
400
5.6733 g = ___________ mg
What is 5,673.3 mg?
500
A neutral lithium atom has this number of valence electrons.
What is one?
500
The lowest state of energy of the electron is known as this.
What is ground state.
500
If mass = (molar mass/1 mol) x amount, than the mass (g) of 3.20 mol Cu is this number.
What is 203 g Cu?
500
This is the density of a rock that has a mass of 454 g and a volume of 100.0 cm3.
What is 4.54 g/cm3?
500
Considering significant figures, the answer to the following problem is this. 3.23 + 1.112 + 1.2222
What is 5.56?