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Pre-Chemistry Skills
Atomic Theory
Electronic Structure
Periodicity
Bonding
100
As opposed to corrosion, explosion and decomposition, evaporation is an example of this type of change.
What is a physical change?
100
J.J. Thomson used the cathode ray rube to discover these subatomic particles.
What are electrons?
100
The first model of the atom to have electrons in quantized energy levels
What is the Bohr model?
100
From left to right across a period, atomic size does this.
What is decrease?
100
The number of bonds that carbon ideally forms
What is 4?
200
A homogeneous mixture of 2 or more substances.
What is a solution?
200
Isotopes have different numbers of these
What are neutrons?
200
sublevel that has 3 orbitals.
What is p sublevel?
200
The element with the highest electronegativity
What is fluorine?
200
Classified as a metal-nonmetal bond
What is an ionic bond?
300
0.0000145 in correct scientific notation
What is 1.45 x 10^-5?
300
The number of protons in carbon-14
What is 6?
300
has the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d3
What is vanadium?
300
This type of ion is larger than the parent atom.
What is an anion?
300
The shape of a CH4 molecule
What is tetrahedral?
400
The number of significant figures in the number 0.003420
What is 4?
400
The sum of protons and neutrons in an isotope
What is the mass number?
400
In noble gases, these valence sublevels are completely filled
What are s and p?
400
The number of valence electrons in helium
What is 2?
400
has a "sea of electrons" that move in and out of nuclei.
What is a metallic bond?
500
The ratio of mass to volume at a given temperature.
What is density?
500
the molar mass of CH4
What is 16.05 g/mol?
500
The number of electrons to completely fill the 5th energy level.
What is 32?
500
tells us the charge for the transition metals.
What is roman numerals?
500
The seven diatomic molecules
What is Br2, I2, N2, Cl2, H2, O2, F2?