Solubility and Lewis dot
Ionic, Covalent and Metallic Bonds
Intermolecular Forces (polar/ non polar)
Gram, moles, Molarity
Chemical Naming
100
A solid which dissolves in a liquid is called the ________
solute
100
Flexibility is a characteristic of which bond type?
Metallic bonds.
100
Name and describe the bond that makes water sticky
Polar bonds are attracted to other polar bonds by electrostatic forces.
100
What is molarity
moles of solute / Liters of solution
100
What is the chemical formula and lewis dot structure for Calcium Chloride?
[Ca]+2 2[Cl]-
CaCl2
200
What is the lewis dot diagram of CH4? Draw it on a piece of paper
200
True or false: Covalent bonds usually occur between metals.
false
200
Describe the polarity of an H2O molecule
H2O is polar. Electrons are pulled toward the oxygen molecule, making one side positive (hydrogen) and one side negative (oxygen)
200
How many moles are in 60 grams of copper?
0.94 mol of Cu
200
Why do certain metal cations in naming have roman numerals to them?
Metals form more than one stable cation
300
What is the general rule gas solubility in a liquid as temperature increases?
Higher the temperature, the lower the solubility
300
Which bond is formed when two atoms are able to SHARE electrons?
Covalent bonds
300
What is the molecular polarity of CO2?
nonpolar
300
What is the molarity if 3 mol of KCl is added into 1.5 L of solution?
2 M or 2 mol/L
300
What is the chemical formula of calcium sulfate?
CaSO4
400
What is a way to increase the solubility of a saturated solvent?
solid into liquid: heat the solvent
Gas into liquid: cool the solvent
400
What makes metallic bonds conductive?
the freely moving electrons.
400
What is the difference between polar intermolecular forces and ionic bonds?
The electronegativity between the atoms involved. Ionic have higher differences than polar molecules do.
400
How many liters of solution are needed to make a 0.95 M solution that contains 1.25 moles of H(2)SO(4)?
1.3 L
400
Is C2H6 covalent or ionic and what is its name?
covalent, dicarbon hexahydride
500
Draw the lewis dot structure of SO3
Sulfur Trioxide, sulfur in the middle with the oxygen bonded, one is double bounded the others are single
500
What are at least four properties of ionic bonds?
reactive, high melting/boiling point, conductive in water, nonconductive out of water, soluble, commonly form salts,
500
Name 5 physical differences that occur when comparing polar vs non-polar intermolecular forces?
Higher polarity = higher surface tension, higher boiling point, lower evaporation rate, tend to be liquid or solid at room temperature, high solubility
Non-polar = low surface tension, low boiling point, high evaporation rate, tend to be liquid or gas at room temperature, low solubility
500
Find the molarity of a solution with 22.3 g of CA(OH)2 in 300 ml of solution.
22.3 g =0.301 mol
0.301/0.3 = 1 M
500
What is the chemical formula for Aluminum Oxide?
Al2O3