WorksheetsChemistry Review
Total questions: 44
Worksheet time: 22mins
Name
Class
Date
1.
What is a compound?
a)
A. A type of element
b)
B. A mixture of different elements
c)
C. A substance made of two or more different elements that chemically combine
d)
D. A substance made of two or more different elements that physically combine
2.
What is a chemical bond?
a)
A. A force exerted by an atom
b)
B. A force exerted by a compound
c)
C. An attraction between atoms
d)
D. An attraction between different chemical substances
3.
How do atoms form bonds?
a)
A. Atoms form chemical bonds through the interaction of their innermost electrons
b)
B. Atoms form chemical bonds through the interaction of their valence electrons
c)
C. Atoms form chemical bonds by fusing their nuclei together
d)
D. Atoms form chemical bonds by sharing protons
4.
Why do atoms form bonds?
a)
A. To become positive or negative ions
b)
B. To become stable
c)
C. To achieve a full valence shell
d)
D. To release stored energy
5.
What type of atoms do not readily form chemical bonds?
a)
A. Metals
b)
B. Metalloids
c)
C. Halogens
d)
D. Noble gases
6.
How do atoms form an ionic bond?
a)
A. Atoms transfer electrons to form ions, which are attracted to each other
b)
B. Atoms transfer protons to form ions, which are attracted to each other
c)
C. Atoms share valence electrons
d)
D. Atoms share their innermost electrons
7.
What elements most often form ionic bonds?
a)
A. Metals in group 1 or 2
b)
B. Nonmetals in group 18
c)
C. Nonmetals in groups 16 and 17
d)
D. Both A and B
e)
E. Both A and C
8.
How do atoms form a covalent bond?
a)
A. Atoms transfer electrons to form ions, which are attracted to each other
b)
B. Atoms transfer protons to form ions, which are attracted to each other
c)
C. Atoms share valence electrons
d)
D. Atoms share their innermost electrons
9.
What elements most often form covalent bonds?
a)
A. Metals
b)
B. Nonmetals
c)
C. Halogens
d)
D. Noble gases
10.
What information can you NOT obtain from a chemical formula?
a)
A. What atoms are found in a single molecule
b)
B. How many atoms are found in a single molecule
c)
C. The structure of a molecule
d)
D. All the pieces of information above can be obtained from a chemical formula
11.
What is a chemical reaction?
a)
A. The change of one element into another substances into another
b)
B. The change of one set of chemicals into another set of chemicals
c)
C. The mixing of two or more different substance
d)
D. A physical change
12.
What is a reactant?
a)
A. A substance that undergoes a chemical change
b)
B. A substance that undergoes a physical change
c)
C. A substance that is formed as a result of a chemical change
d)
D. A substance that is formed as a result of a physical change
13.
What is a product?
a)
A. A substance that undergoes a chemical change
b)
B. A substance that undergoes a physical change
c)
C. A substance that is formed as a result of a chemical change
d)
D. A substance that is formed as a result of a physical change
14.
What does the Law of Conservation of Mass state?
a)
A. Matter should be used wisely during a chemical reaction
b)
B. Matter cannot be created nor destroyed during a chemical reaction
c)
C. Matter can be created but not destroyed during a chemical reaction
d)
D. Matter is destroyed during a chemical reaction
15.
What does the Law of Conservation of Energy state?
a)
A. Energy is created during a chemical reaction
b)
B. Energy is created only if new matter is created during a chemical reaction
c)
C. Energy is created only if matter is destroyed during a chemical reaction
d)
D. Energy cannot be created nor destroyed
16.
What happens when bonds break?
a)
A. Energy is absorbed
b)
B. Energy is created
c)
C. Energy is released
d)
D. There is no change in energy
17.
What can happen when energy is transformed during a chemical reaction?
a)
A. The temperature of the surroundings increases
b)
B. You see a burst of light
c)
C. You hear a “poof” or “bang”
d)
D. Any of the above
18.
What is combustion?
a)
A. A reaction between a fuel and oxygen
b)
B. A reaction between a fuel and carbon dioxide
c)
C. A reaction in which atoms break down and release radiation
d)
D. A reaction in which atoms fuse together and produce huge amounts of energy
19.
What is needed to start combustion?
a)
A. Water
b)
B. A spark or other source of heat
c)
C. Carbon dioxide
d)
D. Nothing, combustion is a spontaneous reaction
20.
What type of fuel releases the most energy?
a)
a. Noble gases
b)
b. Metals
c)
c. Ionic Compounds
d)
d. Organic Compounds
21.
Which of the following is NOT a product of combustion?
a)
a. Water
b)
b. Oxygen
c)
c. Carbon Dioxide
d)
d. Energy
22.
What type of reaction involves the release of thermal energy?
a)
Endothermic Reaction
b)
Exothermic Reaction
c)
Inward Reaction
d)
Outward Reaction
23.
What is single covalent bond?
a)
A. A bond in which atoms share one electron with each other
b)
B. A bond in which atoms share two electrons with each other
c)
C. A bond in which only one atom shares electrons
d)
D. A bond in which an atoms transfers one electron to another atom
24.
What is double covalent bond?
a)
A. A bond in which atoms share one electron with each other
b)
B. A bond in which atoms share two electrons with each other
c)
C. A bond in which only one atom shares electrons
d)
D. A bond in which an atoms transfers one electron to another atom
25.
What is electronegativity?
a)
A. The strength of an atom’s negative charge
b)
B. The number of electrons an atom has
c)
C. The tendency of an atom to attract an electron
d)
D. The tendency of an atom to give up an electron
26.
Hydrogen bonds can form:
a)
A. between molecules
b)
B. within a molecule
c)
C. Both A and B
d)
D. Neither A or B
27.
What type of reaction is: A + B -> AB
a)
a. Synthesis
b)
b. Decomposition
c)
c. Single Replacement
d)
d. Double Replacement
28.
What type of reaction is: AB + CD -> AC + BD
a)
a. Synthesis
b)
b. Decomposition
c)
c. Single Replacement
d)
d. Double Replacement
29.
What type of reaction is: AB + C -> AC + B
a)
a. Synthesis
b)
b. Decomposition
c)
c. Single Replacement
d)
d. Double Replacement
30.
What type of reaction is: AB -> A + B
a)
a. Synthesis
b)
b. Decomposition
c)
c. Single Replacement
d)
d. Double Replacement
31.
What is the element name of the element represented by the chemical symbol Sn?
a)
a. Silicon
b)
b. Tin
c)
c. Sulfur
d)
d. Sodium
32.
What is the element name of the element represented by the chemical symbol Au?
a)
a. Silver
b)
b. Gold
c)
c. Argon
d)
d. Sodium
33.
What is the element name of the element represented by the chemical symbol Ag?
a)
a. Silver
b)
b. Gold
c)
c. Argon
d)
d. Sodium
34.
What is the element name of the element represented by the atomic number 47?
a)
a. Silver
b)
b. Gold
c)
c. Argon
d)
d. Sodium
35.
What is the element name of the element represented by the atomic number 18?
a)
a. Silver
b)
b. Gold
c)
c. Argon
d)
d. Sodium
36.
What is the element name of the element represented by the atomic number 79?
a)
a. Silver
b)
b. Gold
c)
c. Argon
d)
d. Sodium
37.
What is the element name of the element represented by the atomic mass of 19.00?
a)
a. Fluorine
b)
b. Potassium
c)
c. Oxygen
d)
d. Sulfur
38.
What is the element name of the element represented by the atomic mass of 16.00?
a)
a. Fluorine
b)
b. Potassium
c)
c. Oxygen
d)
d. Sulfur
39.
What is the element name of the element represented by the atomic mass of 32.06?
a)
a. Fluorine
b)
b. Potassium
c)
c. Oxygen
d)
d. Sulfur
40.
Which element is in Group 2 and in Period 4?
a)
a. Arsenic
b)
b. Astatine
c)
c. Radon
d)
d. Calcium
41.
Which element is in Group 18 and in Period 6?
a)
a. Arsenic
b)
b. Astatine
c)
c. Radon
d)
d. Calcium
42.
Which element is in Group 15 and in Period 4?
a)
a. Arsenic
b)
b. Astatine
c)
c. Radon
d)
d. Calcium
43.
Which element is in Group 17 and in Period 6?
a)
a. Arsenic
b)
b. Astatine
c)
c. Radon
d)
d. Calcium
44.
What group contains the Noble Gases?
a)
Group 1
b)
Group 2
c)
Group 17
d)
Group 18
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