Vocabulary
The substances formed in a chemical reaction
Products
Classify: Pb(NO3)2 + K2CrO4 ---> PbCrO4 +2KNO3
What is double replacement?
What holds together water molecules?
Hydrogen Bonds
What is the pH when an acidic solution has a hydrogen ion concentration [H+] of 0.045 M?
pH = -log(0.045)
pH = 1.3
Chemical equations must be balanced to satisfy the ___________.
What is the Law of Conservation of Mass/Matter?
What is the difference between endothermic and exothermic?
Endothermic - absorbs energy
Exothermic - releases energy
Classify: P4 + 5O2 ---> P4O10
What is synthesis?
Surface tension in water is due to:
Hydrogen bonding
When an atom splits, is that fission or fusion?
Fission
The number of oxygen atoms
Al2(CO3)3
9 oxygen atoms
What is the difference between Q and c in
Q = mc (deltaT)
Q is heat energy lost or gained
c is specific heat
Classify: 2H3PO4 ---> H4P2O7 + H2O
What is decomposition?
Which of the following are insoluble?
Na2CO3 PbCl2 Ca(OH)2
PbCl2
What are the products of a neutralization reaction?
Water and salt
What is the formula for Carbon Trichloride
CCl3
Define solute and solvent
Solute is being dissolved
Solvent is doing the dissolving
In a combustion reaction, what is always produced?
What are CO2 and H2O?
Name THREE ways to help dissolve a solid
Solid: increase temperature, stir, decrease particle size
What is the charge of Flourine?
-1
Which is true for an acid?
A) tastes bitter
B) has a pH greater than 7.0
C) formulas begin with H
D) causes indicators to turn blue
C) formulas begin with H
What is a mole ratio?
Conversion factor using coefficients from a balanced equation
Classify: C4H10 + O2 --> H2O +CO2
Combustion
What is the molarity of a solution made with 4.2 moles of NaCl in 3.60 liters of solution?
Molarity = moles/liters
Molarity = 4.2/3.60
1.17M
What is the name of Ca(OH)2?
Calcium hydroxide
If the temperature of a gas increases, what will happen to the pressure?
Increase