Chemistry Review Sheet
Fill in the chart below. M= metal, NM= nonmetal, ML= metalloid
Symbol
Fe
Sb
Name
Antimony
Chlorine
Atomic
#
Atomic
Mass
55.847
#
Protons
51
17
Ni
58.69
Tungsten
74
#
#
Electrons Neutrons
26
71
17
28
M, NM,
ML
M
NM
74
Read each situation & determine if it is a Physical Change (P) or a Chemical Change (C).
1.
Food is digested. _____
2. You increase the volume of a piece of gold by adding more to it. _____
3. Hydrochloric acid & sodium hydroxide react & form sodium chloride & water. ____
4. Nitrogen gas is cooled down to form a liquid. _____
5. Plant roots absorb water. _____
6. A match burns. ______
7. Gatorade powder dissolves in water. _____
8. A nail rusts. _____
Solve the following density problems.
1.
Gold has a mass of 20g and a volume of 10mL. What is its density?
2. A marble displaces 18mL of water and weighs 40g. What is its density?
3. Water has a density of 1g/mL. If you have 25mL of water, what is its mass?
Identify the following as an element (E), compound (C), or mixture (M).
1.
Sodium ____
7. Salt water ____
2. Water ____
8. Nitrogen _____
3. Oxygen ____
9. Table salt ____
4. Cake batter ____
10. Soda ____
5. Iron ____
11. Soil ____
6. Carbon dioxide ____
12. Hydrogen peroxide ____
Solubility and states of matter.
Label the following on the graph: melting point, boiling point, freezing point, solid state, liquid
state, and gas state.
1. How would the molecules move in the substance graphed above at 90 degrees?
Match each diagram with its correct description. Diagrams will be used once.
A
B
C
D
E
___1. Pure Element – only one type of atom present.
___2. Mixture of two elements – two types of uncombined atoms present.
___3. Pure compound – only one type of compound present.
___4. Mixture of two compounds – two types of compounds present.
___5. Mixture of a compound and an element.
Tell whether each of the equations supports the Law of Conservation of Mass. Show your work!
1.
Na + I2 
2. Mg + HCl 
3. K3PO4 + HCl
NaI
MgCl2
 KCl
+ H2
+
H3PO4
Fill in the chart for each of the following groups.
Group #
1
Group Name
Valence electrons
1
Alkaline Earth
metal
13
Nitrogen Group
16
6
Halogens
18
Vocab:
List & define 4 properties of metals:
1.
2.
3.
4.
5. Explain the difference between a chemical and a physical change.
6. Define the Law of Conservation of Mass.
Practice Test Questions:
1.
The central part of an atom is called the
a. electron
b. neutron
c. proton
d. nucleus
2.
The electric charge on a proton is
a. positive
b. neutral
c. negative
d. changing
3.
The number of protons in the nucleus is the same as the ______________.
a. atomic mass
b. isotope
c. atomic number
d. half-life
4.
Nitrogen has the atomic number 7. An isotope of nitrogen containing 8 neutrons would be
a. nitrogen-13
b. nitrogen-14
c. nitrogen-15
5.
The modern periodic table is organized by
a. size of atom
b. atomic mass
c. number of neutrons
d. atomic number
6.
Elements in a group have
a. a wide range of chemical properties
b. the same atomic radius
c. similar chemical properties
d. the same number of protons
What must be known in order to calculate density?
a. mass and solubility
b. mass and length
c. mass and color
d. mass and volume
7.
8.
What does the word malleable mean?
a. The substance can be bent, shaped, or pounded into a thin sheet.
b. The substance can dissolve in water.
c. The substance can conduct electricity.
d. The substance has a high density.
9.
Which of the following is an example of a solution?
a. melting ice
b. sand and water
c. boiling water
d. rubbing alcohol in water
10. Which of the following is an example of a chemical change?
a. water evaporating
b. wood burning
c. ice cream melting
d. face blushing
11. A substance that allows electricity and/or heat to pass through it is __________.
a. magnetic
b. a conductor
c. an insulator
d. a catalyst
12. Which is true about a chemical change in matter?
a. A chemical change causes a change in mass
b. Substances never change phase as a part of a chemical change.
c. Matter is destroyed during a chemical change
d. Atoms are rearranged during a chemical change.
13. Which of the following is a homogeneous mixture?
a. oil & vinegar salad dressing
b. a lava lamp
c. apple juice
d. trail mix