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WorksheetsUnit 3 Review
Total questions: 37
Worksheet time: 25mins
Name
Class
Date
1.
Students react baking soda & vinegar.
Which of the following would provide the evidence that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction?
Which of the following would provide the evidence that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction?
a)
The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction.
b)
Bubbles were produced during the reaction, which meant that a gas was being produced.
c)
The plastic bag did not change in any way, indicating that it was not involved in the reaction.
d)
The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.
2.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
3.
What do atoms that form positive ions tend to do?
a)
Tend to lose electrons
b)
Tend to lose protons
c)
Tend to gain electrons
d)
Tend to gain protons
4.
What usually forms the positive ion?
a)
Metal
b)
Non Metals
c)
None
5.
What happens when the sodium atom loses an electron?
a)
It become negatively charged
b)
It become positively charged
c)
none
6.
What usually forms the negative ion?
a)
nonmetals
b)
metal
c)
none
7.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
8.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
9.
What happens when an atom loses an electron?
a)
Neutral (no charge)
b)
Positive charge
c)
Negative charge
10.
What happens when an atom gain an electron?
a)
Neutral(no charge)
b)
Positive charge
c)
Negative charge
11.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
12.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
13.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
14.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
15.
Predict the bond that will form between Sr and S.
a)
Ionic
b)
Covalent
16.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom.
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
17.
What is the number of valence electrons for Oxygen?
a)
8
b)
6
c)
2
d)
1
18.
What group would Ca like to join with
a)
5
b)
6
c)
7
d)
8
19.
What is the chemical formula for dinitrogen trioxide?
a)
N2O3
b)
NO2
c)
N3O
d)
N2O4
20.
Cr3N
a)
chromium nitride
b)
chromium (I) nitride
c)
chromium (II) nitride
d)
chromium (III) nitride
21.
AgOH
a)
silver hydroxide
b)
silver (I) hydroxide
c)
silver hydrogen oxide
d)
silver hydride
22.
carbon monoxide
a)
CO
b)
CO2
c)
C2O
d)
COH
23.
P2O5
a)
phosphorus oxide
b)
phosphorus (II) oxide
c)
diphosphorus pentoxide
d)
phosphorus pentoxide
24.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
25.
AgNO2 is called...
a)
silver oxide
b)
silver nitrogen oxide
c)
silver nitrate
d)
silver nitrite
26.
What is the ionic compound formed between K and F?
a)
KF
b)
K2F
c)
KF2
d)
K2F2
27.
The formula of sodium sulfate is Na2SO4. How many elements does it contain?
a)
2
b)
3
c)
4
d)
7
28.
What is the formula for potassium sulfide?
a)
KS3
b)
2KS
c)
K2S
d)
KS
29.
Which of the following gives the correct chemical formula for the compound created by Nitrogen and Potassium?
a)
K3N
b)
KN
c)
N3K
d)
KN3
30.
Which of the following gives the correct chemical formula for the compound created by the combination of Magnesium and Phosphorus?
a)
Mg2P3
b)
MgP
c)
Mg3P2
d)
MgP2
31.
Which of the following gives the correct chemical formula for the compound created by the combination of Nitrogen and Calcium?
a)
Ca2N3
b)
CaN
c)
Ca3N2
d)
CaN2
32.
What is the chemical name for the binary compound listed:
Na2O
Na2O
a)
Sodium oxide
b)
Sodium (II) oxide
c)
Disodium monoxide
d)
Disodium oxide
33.
What is the chemical name for the binary compound listed:
Fe3N2
Fe3N2
a)
Iron nitride
b)
Iron (III) nitride
c)
Iron (II) nitride
d)
TriIron dinitride
34.
What is the chemical name for the binary compound listed:
CuS
a)
copper sulfide
b)
copper (I) sulfide
c)
copper (II) sulfide
d)
copper monosulfide
35.
The formula for nitrogen tetraoxide is
a)
NO
b)
NO3
c)
N4O
d)
NO4
36.
What is the name for the binary compound Li3N?
a)
Trilithium nitride
b)
Lithium nitride
c)
Trilithium mononitride
d)
Trilithium nitrogen
37.
What compound forms from calcium and chlorine?
a)
Calcium chlorate
b)
Chlorine calcide
c)
Calcium chloride
d)
Calcium dichloride
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