The following is an example of which type of chemical reaction?Na (s) + H2O (l) ---> NaOH (aq) + H2 (g)
Single replacement
Decomposition
Double replacement
Combustion
For which of the following is heat energy released?
Evaporation
Melting
Condensation
Boiling
Which of the following statements about water is TRUE?
Its strongest intermolecular forces are London dispersion forces.
It is a non-polar molecule.
It is a solid at room temperature and pressure.
Its solid form is less dense than its liquid form.
In an acid-base reaction, which of the following is true?
The reaction produces salt and water.
The acid accepts a hydrogen ion.
The base donates a hydrogen ion.
The acid both accepts and donates a hydrogen ion.
A reducing agent is one:
That gains an electron
That causes a substance to lose an electron
That causes a substance to gain an electron
That causes the oxidation of another element
Consider the following unbalanced redox reaction:
MnO4- (aq) + SbH3 (aq) → MnO2 (s) + Sb (s)
What is being reduced?
MnO4-
SbH3
MnO2
Sb
Which of the following is true regarding redox reactions?
When a substance is reduced, electrons are gained.
When a substance is reduced, electrons are lost.
When a substance is oxidized, electrons are gained.
Both reduction and oxidation are the same process.
With a voltaic cell, the flow of electrons moves from the oxidation half-reaction cell to the reduction half-reaction cell via a wire.
TRUE
FALSE
When heat is removed from a gas and it begins to form a liquid, the change in entropy is negative.
TRUE
FALSE
As the amount of matter (in grams) increases, the energy that results from conversion of the matter increases proportionally.
TRUE
FALSE
1.Decomposition i think 2.boiling 3.It is a solid at room temperature and pressure. 4.The base donates a hydrogen ion. 5.That causes the oxidation of another element 6.MnO2 7.When a substance is reduced, electrons are lost. 8.True I think 9.False 10.True
