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Chemistry Unit Review Part 2
Test Description: Second part of chemistry unit review
Instructions: Answer all questions to get your test result.
1) What does the law of conservation of matter state about a chemical equation?
A
It does not apply
B
The number of reactant atoms needs to be greater than the number of product atoms
C
The number of reactant atoms needs to be less than the number of product atoms
D
The number of reactant atoms needs to equal the number of product atoms
2) How do you know if a substance is an element or a compound?
A
Elements are just one, compounds are 2 or more SAME elements
B
Elements are just one, compounds are 2 or more DIFFERENT elements
C
Elements are 2 or more and compounds are one
D
THey are the same
3) What type of chemical bond is between a metal and a nonmetal?
A
Covalent
B
Ionic
4) What type of bond is between a metal and a metal?
A
Ionic
B
Covalent
5) What type of bond is when one atom gives up electrons to another?
A
Ionic
B
Covalent
6) How many ATOMS are in 2NaCl?
A
3
B
4
C
1
D
2
7) How many ELEMENTS are in 2NaCl?
A
4
B
3
C
2
D
1
8) What is another name for columns on the periodic table?
A
horizontal lines
B
Periods
C
Groups/Families
D
Rows
9) What is another name for rows on the periodic table?
A
Groups
B
Families
C
Periods
D
Columns
10) If elements are in the same column on the periodic table, what do they have in common?
A
Same number of valence electrons
B
Same symbol
C
Same atomic number
D
Same number of electron shells
11) If elements are in the same row on the periodic table, what do they have in common?
A
Same atomic number
B
Same number of electron shells
C
Same number of valence electrons
D
Same mass number
12) Metals are located where on the periodic table?
A
Right of the zigzag line
B
Left of the zigzag line
C
One the zigzag line
D
There are no metals on the periodic table
13) Nonmetals are located where on the periodic table?
A
Right of the zigzag line
B
Left of the zigzag line
C
On the zigzag line
D
There are no nonmetals on the periodic table
14) What are valence electrons?
A
Inner most electrons
B
Outer most electrons
C
All electrons
15) Which two subatomic particles are relatively the same size in mass?
A
Protons and Neutrons
B
Electrons and Neutrons
C
Electrons and Protons
D
Neutrons and Electrons
16) What particles are found inside the nucleus of an atom?
A
Electrons and Protons
B
Electrons
C
Protons and Neutrons
D
Protons
17) How do you calculate the number of electrons in an atom?
A
Number of neutrons
B
Mass number plus the atomic number
C
Looking at the atomic number or number of protons
D
Mass number minus the atomic number
18) How do you calculate the number of neutrons in an atom?
A
number of electrons
B
Mass number minus atomic number
C
mass number plus atomic number
D
atomic number
19) Which is NOT a subatomic particle?
A
Electrons
B
Mass
C
Protons
D
Neutrons
*select an answer for all questions
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