Final exam Flashcards
(30 cards)
Which of the following descriptions apply to matter in the gaseous state?
pressure change significantly influences the volume
Intermolecular forces differ from intramolecular forces in that they
are much weaker
In which of the following liquids would London forces be the predominant intermolecular force?
Br2
How many valence electrons are there in an atom of chlorine?
7
Where does an element X with the electron dot structure, X *, fit in the periodic table?
Group IA
Which process always requires the input of energy?
bond breaking
The expected binary ionic compound formed between calcium and oxygen is _?
CaO
The expected binary ionic compound formed between silicon and fluorine is
SiF4
What is the chemical formula of a compound named ammonium sulfide?
(NH4)2S
What is the chemical name of PbO2
lead(IV) oxide
The physical state that retains both its shape and volume is
solid
A Brønsted/Lowry base is defined as
as a proton acceptor
Which of the following qualifies as a Bronsted-Lowry base?
NH3
The halogens will generally form how many bonds w/others?
1 bond
Group IIA elements are also called
alkaline earth metals
The formation of a cation from an atom would be best described as an
oxidation reaction
A liquid is characterized by
indefinite shape and definite volume
What is TRUE of an oxidizing agent
It causes oxidation AND It gains electron(s)
The partial pressure of helium gas in a gaseous mixture of helium and hydrogen is
the pressure that the helium would exert in the absence of the hydrogen
In the liquid state, disruptive forces are
roughly of the same magnitude as cohesive forces
CO(g) + 2 H2(g) ↔ CH3OH(g) + heat
If the temperature of the system is increased then the [H2] would?
increase
A barometer uses mercury because
the density of mercury is very large which allows the barometer to be short
statements best describes an ionic bond?
a strong lattice of positively and negatively charged atoms held together by electrical forces
Which of the following statements is NOT a part of kinetic molecular theory?
particles in the system cannot transfer energy to each other
