MP2 Test 1 Review:
Use the following review sheet to help you prepare for the test on Wednesday, January 29th. In
addition to this review sheet, you should review the material on the chemical reactions and
biochemistry websites.
Solutions vs. suspensions:
Label the following as either a solution, suspension, or colloid. What determines the type of mixture?
The size of the particle plays a role in determining the type of mixture.
A: Suspension
B: Colloid
C: Solution
A
B C
Complete the table below:
Type of substances involved
Solution or suspension?
Polar solute in a polar solvent
solution (like dissolves like)
Nonpolar solute in a polar solvent
suspension
Nonpolar solute in a nonpolar solvent
solution
List the three factors that can affect the formation of a solution:
Solid­Liquid Solutions
Liquid­Gas Solutions
1. surface area
1. temperature
2. agitation (shaking)
2. pressure
3. temperature
3. agitation
Chemical vs. Physical Change:
What is the difference between a chemical and a physical change?
Physical change= no new substance
Chemical change= new substance formed
Which of the following are considered chemical changes and which are considered physical changes?
Example:
Chemical or Physical?
Tearing paper
Physical (paper before, paper after)
Bleaching hair
Chemical
Burning toast
Chemical
Melting chocolate
Physical (melting
List 4 signs of a chemical reaction?
1. Change in temperature (endothermic or exothermic)
2. Change in smell
3. Change in color
4. Formation of a gas (bubbles)
Types of Bonds:
List the three types of bonds:
Bonds Type
Types of Atoms Involved
metallic
Example
metal and metal
Covalent
nonmetal and nonmetal
Ionic
Nonmetal and metal
Tin and Copper
H₂O (water)
NaCl (Sodium chloride)
Draw the Lewis dot structures for the following compounds:
C₂H₆:
GaCl₃:
Identify the types of reactions listed below:
Chemical Reaction
Type of Reaction
2Ca + O₂ → 2CaO
Synthesis (A + B → C)
2H₂O₂ → 2H₂O + O₂
Decomposition (AB → A + B)
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O + Heat & Light
Combustion (C + H + O → H₂O + CO₂ )
Fe + Pb(NO₃)₂ → Pb + Fe(NO₃)₂
Single displacement (AB + C → A + BC)
CaBr₂ + AgNO₃ → AgBr + Ca(NO₃)₂
Double displacement (AB + CD → AC + BD)
How could you go about controlling the rate of a chemical reaction? How does this relate to the
collision theory?
Increasing temperature= ↑ kinetic energy = ↑ movement of particles = ↑ collisions
Increasing surface area= ↑ exposure of reactant= ↑ collisions
increasing concentration= ↑ number of molecules = ↑ collisions
How does the image below demonstrate the law of conservation of mass?
CaCl₂ undergoes and a chemical reaction with NaSO₄ to form a new substance but the mass
remains the same. This shows that despite the formation of a new substance, no matter was created
or destroyed.
Cells and Transport:
What are the three tenants (parts) to the cell theory?
1. All living things are composed of cells.
2. Cells are the basic unit of structure and function
3. All cells come from preexisting cells
Complete the table below:
Suppose you sprinkled salt on a slug, what would you expect to see happen?
The slug would shrivel up. The water inside the cells of the slug will leave and move towards the area
with the high salt concentration. This demonstrates osmosis.
Label the following as hypotonic, isotonic, or hypertonic.
A: Hypotonic (water moves into cell)
B: Isotonic (water is equal inside and outside
cell)
C. Hypertonic (water moves out of cell)
A
B
C