Show:
Ions
Molecular Compounds
Types of Chemical Reactions
Balancing Equations
Acids & Bases
100
What is an anion?
An ion that is formed when electrons are gained, giving it a negative charge.
100
What type of bond is in a molecular compound?
Covalent
100
What are the products of a complete combustion? What is a clear indicator that incomplete combustion has not occurred?
Water, CO2 and energy. No soot (carbon).
100
What does the Law of Conservation of Mass have to do with balancing equations?
Matter can be neither created nor destroyed. This means that the number of atoms of each element on either side of the equation must be the same, they are simply rearranged.
100
What is an acid?
A compound that releases H+ in solution.
200
What is the chemical formula of sulfate?
SO4 2-
200
What are the types of elements in a molecular compound? ______ + _______ ?
Non-metal + Non-metal
200
Many double displacement reactions result in the formation of _______ ?
A precipitate.
200
What does the state symbol (aq) mean?
Dissolved in solution.
200
Do bases have a high or low pH?
High.
300
When are roman numerals used in a compound name?
To denote the charge of an ion that is multivalent.
300
What prefix is used to name an element with 9 atoms?
Nona -
300
What type of reaction is one where two compounds exchange element partners to form two new compounds?
Double Displacement
300
Is this equation balanced? 2H3PO4 + 6KOH --> 2K3PO4 + 6H2O
Yes.
300
What does pH measure?
The amount of H+ in a solution. The lower the pH the more H+ in a solution.
400
How is an ionic bond formed?
Electrons are lost from one atom and gained by the another.
400
True or False? When the first element in the formula has one atom, mono- is used.
False
400
What type of reaction is Cu + AgNO3→ Ag + Cu(NO3)2?
Single Displacement
400
What is a balanced equation?
An equation with the same number of atoms of each element on either side of the arrow.
400
Would a solution with a pH of 1 be a strong acid, weak acid, strong base or weak base?
Strong acid
500
Looking at an oxygen, will it lose or gain electrons, what will its charge be?
It will gain two electrons and have charge of 2-.
500
What is the name for N2O4?
Dinitrogen tetroxide
500
What type of reaction is AB + CD --> AC + BD
Double displacement
500
What number are needed to balance the following equation? KOH + HBr --> KBr + H2O
2
500
What is a neutralization reaction?
When an acid and base react to form water and a salt.