Chemistry Exam Review
Bundle 1 – Measurement, Scientific Method
1. The apparatus used to measure volume is a __?
Graduated Cylinder
2. You want to measure the area of the floor of the carpet. Which measurements do you
need and what will you do with them?
Length x Width
3. The meterstick is used to measure __?
Length
4. The number of cubic centimeters in one liter is __?
1000
5. The triple beam balance is used to measure __?
Mass
6. The symbol c represents the prefix __?
Centi
7. Milliliter can be represented by the symbol__?
mL
8. In the metric system, mass is measured in __?
Grams
9. The first step of the scientific method is stating the __?
Question
10.Volume is _?
Amount of space something occupies
11.The curved surface of the liquid in a container is called the __?
Meniscus
12.You measure water in a container, mark the top. If you left this in the freezer overnight
the level of the ice will be _ that the original water.
Higher
13.Ice floats on water because __?
Less dense
14.List 5 lab safety rules. Hair tied back, no running, no horseplay, no eating/drink, goggles
15.Explain how to find the volume of an irregularly shaped object.
(Volume of water + object) – initial volume of water= vol. of object
16.On a graph, which axis is the dependent variable?
(water displacement)
Y-axis
17.When graphing temperature vs. time, which is the independent variable?
Time
18.If the mass of an object is 80g and the volume is 15 mL, what is the density of the object?
5.3 g/mL
19.If the density of an object is 5 g/mL, will it sink or float in water? sink
20.If you cut the object from question 19 in half, what would the density be? 5 g/mL
Bundle 2 – How matter changes, Classification of Matter
21.Which of the following is a chemical change?-melting ice cream-rusting nail-boiling water
22.List the 5 phase changes of matter and their definition
ex: Freezing=liquidsolid
Freezing= liquid solid, melting=solidliquid, evaporation=liquidgas,
condensing=gasliquid, sublimating=solidgas
23.Label the heat curve:
E
D
gas
C
liquid
B
Solid
b-melting d-evaporation
24.In region C the substance is a _Liquid__ In Region A _____Solid_________
25.Air is a ____?
Mixture
26.A homogeneous mixture formed when 1 substance dissolves in another substance is called
a __?
solution
27.Matter that is combined physically is _______.
Mixture
28.How would you separate a solution of salt water?
Evaporate the water
Bundle 3 Periodicity
29.An atom is the smallest part of a __?
Element
30.Compounds are composed of __?
molecules
31.A _ is a way to represent the chemical elements.
Chemical symbol
32.One molecule of H2SO4 contains a total of _7_atoms
_2_H atoms, _1_S atoms, _4_O atoms
33.3 molecules of NaOH would be written _3NaOH__.
34.In the formula 6HCl the #6 is a _____ _.
coefficient
35.Which of the following is a pure substance? Sugar, concrete, soil, Raisin Bran
36.What are the names of the following chemical symbols: -C –H –Ag -K -Ca - Na – Ne
Carbon, Hydrogen, Silver, Potassium, Calcium, Sodium, Neon
37.The elements of the periodic table are divided into __.
Metals and non-metals
38.An atom that contains 92 protons and 143 neutrons has an atomic weight of __.
235
39.Draw Lewis Dot structure for Sodium and Carbon.
40.What would be the oxidation # on an element that has 6 valence electrons? -2
41.In 1897, J.J. Thompson called the negatively charged particles of an atom “corpuscles”.
Today, we call them __. Electrons
42. In 1913, Neils Bohr found that electrons move in orbits around the _. Nucleus
43.The greatest number of electrons an atom can hold in its first energy level _2, second_8.
44. Atoms of the same element that have the same number of protons but different numbers
of neutrons are called _.
Isotopes
45. The noble gasses make up which group? __ Group 18 or 8A
46.An atom is stable when _.
Outer electron shell is full
47.Give a balanced formula for Mg and P.
Mg3P2
48.Give a balanced formula for B and O
B2O3
49.# of Oxygen atoms present in 2Al (NO3)3
18
50. What is the charge of an element that has lost 2 electrons?
51.Elements are more similar in the same _.
+2
Group
52.Element to the right of the zigzag line are _. Nonmetals
53. 4 properties of metals - luster, good conductor, high melting pt, malleable, corrodes easily
Bundle 4 Bonding
54.Bonds formed between 2 nonmetals-
Covalent
55. Covalent bond ___ electrons
Share
56.If an atom loses an e-, it will be a _Cation_. If an atom gains an e-, it will be a _anion_.
Bundle 5 Conservation of Mass
57.2H2O  2H2 + O2 is an example if a _decomposition_ rxn The 2H2O is a _coefficient___
58. If 2 substances are combined and there is a release of energy, it is a _exothermic_ rxn.
59. The law of conservation of mass states _mass is not created nor destroyed_.
60. The reactant is on the _Left__ side of a chemical equation
61. Balance: Na + O2  Na2O
4Na + O2  2Na2O
62. Balance: C+ H2  CH4
C + 2H2  CH4
63.Balance: Al2O3 Al + O2
2Al2O3 4Al + 3O2
64.Label as a synthesis, Decomposition, Single replacement, or double replacement rxn
NaOH + HCl  NaCl + H2O
Double Replacement
Cu + 2S  Cu2S
Synthesis
2KClO3  2KCl + 3O2
Decomposition
2NaCl + Br2  2NaBr + Cl2
Single Replacement
Bundle 6 Water
65. Define Cohesive
Water attracted to water
66.Define Adhesive
Water sticks to other things
67.Define Surface Tension
Surface acts as a skin because of cohesion
68.Define Universal Solvent
Water’s ability to dissolve anything polar
69.Define Solute, Solvent
being dissolved, dissolver
70. Compare Saturated Vs Unsaturated Solutions Full, still has room
71.Molecules that contain a positive and a negative end are said to be __. Polar
72.How can you increase the RATE of a reaction
Stir, decrease molecule size
Bundle 7 Acids and Bases, pH
73.As the pH of an acid decreases, what happens to the strength of the acid? Gets stronger
74. The pH scale is a measure of _H+_concentration
The pH of an acid is always _<_ than 7.
The pH of a neutral substance is _7_.
The pH of a strong base is close to _14_.
75. Tell whether the following is an acid or a base.
-orange juice: acid -Bleach: base –lemonade :Acid -Soap : base –Deodorant :base