Ionic Bonding
The electrons involved in bonding are ________
Valence electrons (highest energy level)
Zn -----> Zn+2 + 2e
oxidation
The difference in the potential energy of the products and the reactants is called
heat of reaction.
The term “fluids” collectively refers to
What is liquids and gases.
When atoms "share" valence electrons, a __________ is formed.
What is covalent bond.
Oxidation and reduction occur ....
simultaneously.
If the reaction is endothermic, the sign of ΔH will be
positive.
Definite shape and volume
Solid.
Typically, when two atoms form a chemical bond, the expected result is that the electrons obtain ....
noble gas configuration for both atoms.
"Charge" on a element in a compound
oxidation number
At constant pressure ΔH =
q (heat)
What determines the physical state of a substance?
pressure and temperature.
Based on the electron configuration of rubidium, Rb, and nitrogen, N, the chemical formula for the most likely compound between these two elements would be
What is Rb3N
What type of diagram uses a single dot to represent an electron?
What is Lewis Diagram.
During oxidation, the oxidation number of a species becomes ...
more positive.
ΔH is (-)
exothermic
At room temperature (25°C) and normal atmospheric pressure, water exists as a
liquid.
Based on the electron configuration of sulfur, S, a sulfur atom will __________ valence electrons when bonding with lithium.
What is gain 2.
When the C2H4 molecule is drawn, how many electrons will be shared between the two carbon atoms?
4 (double covalent bond)
Cu+2 + 2e ----> Cu0
reduction
If a chemical reaction is spontaneous, the total entropy of the chemical system and its surroundings
increases.
In which physical change is heat energy released?
freezing.