3rd Q Review #2 Question Preview (ID: 59103)


Aug 2017. TEACHERS: click here for quick copy question ID numbers.

An open flask is half filled with water at 25°C. Phase equilibrium can be reached after
a) more water is added to the flask
b) the flask is stoppered
c) the temperature is decreased to 15°C
d) the temperature is increased to 35°C

The atoms in a sample of an element are in excited states. A bright-line spectrum is produced when these atoms
a) absorb energy
b) absorb positrons
c) emit (Release ) positrons
d) emit (Release ) energy

Which phrase describes the decay modes and the half-lives of K-37 and K-42 on table N?
a) the same decay mode but different half-lives
b) the same decay mode and the same half-life
c) different decay modes and different half-lives
d) different decay modes but the same half-life

Based on Table S, an atom of which element has the strongest attraction for electrons in a chemical bond?
a) carbon
b) sulfur
c) fluorine
d) selenium

Entropy is a measure of the
a) acidity of a sample
b) disorder of a system
c) concentration of a solution
d) chemical activity of an element

Which substance is an electrolyte?
a) O2
b) Xe
c) C3H8
d) KNO3

Which element has six valence electrons in each of its atoms in the ground state?
a) Se
b) As
c) Kr
d) Ga

One acid-base theory defines an acid as an
a) H+ acceptor
b) H+ donor
c) H- acceptor
d) H- donor

In the formula XS, the symbol X could represent the element
a) Al
b) Ar
c) Mg
d) Na

Which list of symbols represents nonmetals, only?
a) B, Al, Ga
b) Li, Be, B
c) C, Si, Ge
d) P, S, Cl

Which aqueous solution has the highest boiling point at standard pressure?
a) 1.0 M KCl(aq)
b) 1.0 M CaCl2(aq
c) 2.0 M KCl(aq
d) 2.0 M CaCl2(aq)

The collision theory states that a reaction is most likely to occur when the reactants collide with the proper
a) formula masses
b) molecular masses
c) density and volume
d) energy and orientation

The reaction of an Arrhenius acid with an Arrhenius base produces water and
a) a salt
b) an ester
c) an aldehyde
d) a halocarbon

The addition of a catalyst to a chemical reaction provides an alternate pathway that
a) increases the potential energy of reactants
b) decreases the potential energy of reactants
c) increases the activation energy
d) decreases the activation energy

Which process is commonly used to separate a mixture of ethanol and water?
a) distillation
b) ionization
c) filtration
d) titration

At STP, which sample contains the same number of molecules as 3.0 liters of H2(g)?
a) 1.5 L of NH3(g)
b) 2.0 L of CO2(g)
c) 3.0 L of CH4(g)
d) 6.0 L of N2(g)

What occurs when a magnesium atom becomes a magnesium ion?
a) Electrons are gained and the oxidation number increases.
b) Electrons are gained and the oxidation number decreases.
c) Electrons are lost and the oxidation number increases.
d) Electrons are lost and the oxidation number decreases.

What is the number of electrons in an atom that has 20 protons and 17 neutrons?
a) 37
b) 20
c) 3
d) 17

The mass of a proton is approximately equal to the mass of
a) an electron
b) a neutron
c) an alpha particle
d) a beta particle

Which phrase describes two forms of solid carbon, diamond and graphite, at STP?
a) the same crystal structure and the same properties
b) the same crystal structure and different properties
c) different crystal structures and the same properties
d) different crystal structures and different properties

Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 59103 in the upper right hand corner or click here.

TEACHERS / EDUCATORS
Log In | Sign Up / Register

Help / Support / FAQ




Gaming Links