Mixed Bucket
The first idea of the atom stated that atoms were... (in relation to each other)
A ring of 8 electrons
What is a (perfect) octet?
An irreversible change is usually....
What is a chemical change?
In terms of acid/base/neutral, a pH of 7.000000000000000000000001 is...
What is a base?
This halogen is the most electronegative element and always has an oxidation number of __ in compounds
What is -1? (the atom is Fluorine)
Polar bonds are caused by an ___ sharing of electrons
What is 'unequal'?
The number of electrons one line represents in a Lewis structure
(example: H-:O:-H (water) has lines connecting each atom)
What are two electrons?
This change can be a physical OR chemical change
What is a color change?
In a pH scale, the system in which each pH is more acidic/basic then the next is _______
What is logarithmic?
Unless in peroxide, oxygen's oxidation number is represented as
What is -2?
Weak, temporary attractions between molecules caused by fluctuating dipoles formed by uneven distribution of electrons
What are London Dispersion Forces?
The maximum amount of lines between two atoms
(example of lines: K=Mg::)
What is 3 lines (6 electrons)?
Water is boiled, frozen, and melted, yet maintains it's internal structure, remaining as H2O. This is a ___
What is a physical change?
The names of the atoms listed, in order:
H20
OH-
H30+
What are water, hydroxide, & hydronium?
A gain in electrons (oxidation/reduction)
What is reduction?
The products that result from O2 (dioxygen) and a hydrocarbon interacting in a combustion reaction
What are H20/water, (light/heat,) and CO2/carbon dioxide?
The maximum number of electrons the first ring of electrons can hold along with the maximum number of electrons the second and third (and so on) can hold
What are 2 and 8 electrons?
When ammonium dichromate (NH₄)₂Cr₂O₇ is ignited, it decomposes violently into nitrogen gas, water vapor, and chromium(III) oxide.
What is a chemical change?
The amount of times more acidic a pH of 2 is in comparison to a pH of 7
What is 100,000 times (10^5)?
The oxidation numbers of the elements in dichromate (Cr₂O₇) with an overall charge of -2
What are ↓ ?
Chromium (Cr): +6
(Diachromium {Cr₂}: +12)
Oxygen: -2
(Heptoxide {O₇}: -14)
__ occurs when hydrogen and a highly electronegative atom (such as oxygen, nitrogen, or fluorine) form a compound
What is a hydrogen bond?
A pair of valence electrons not shared with another atom
What is a lone pair?
Grinding a crystal into powder is an example of a...
What is a physical change?
The amount of times more acidic a pH of 0 is in comparison to a pH of 14
What is 100 trillion times (1 with 14 zeroes or 10^14)?
The oxidation numbers of each element in NaClO3 (EVERY atom):
Sodium: 1 (group 1 metals are +1 in compounds)
Chlorine: _
Oxygen: _
Dioxygen (O3): _
What are ↓ ?
Sodium = +1, Chlorine = +5, Oxygen = -2, and Dioxygen = -6?