WorksheetsEquations
Total questions: 56
Worksheet time: 59mins
Name
Class
Date
1.
Name this compound: P4S5
a)
Tetraphosphide pentasulfide
b)
Tetraphosphorus pentasulfide
c)
Pentaphosphide tetrasulfur
d)
Pentaphosphorus tetrasulfide
2.
Give the formula for... Dinitrogen trioxide
a)
N(II)O3
b)
N5O6
c)
N3O2
d)
N2O3
3.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
4.
When balancing equations what does
-->
mean?
-->
mean?
a)
subscript
b)
equals
c)
it is just an arrow
d)
yield
5.
Which of the following is evidence of a chemical reaction?
a)
fizzing
b)
water changing to ice
c)
saltwater
d)
paper being cut in half
6.
Decomposition occurs when...
a)
Two formulas combine.
b)
A formula breaks apart.
c)
An atom is replaced during a reaction.
d)
Yes because Yes
7.
A synthesis occurs when...
a)
Two formulas combine.
b)
A formula breaks apart.
c)
An atom is replaced during a reaction.
8.
PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
9.
AlCl3 + Na2SO4 ---> Al2(SO4)3 + NaCl
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
10.
Sodium has how many valence electrons?
a)
1
b)
2
c)
8
d)
11
11.
Sodium will do what to become stable?
a)
Nothing
b)
Gain 1 electron
c)
Gain 7 electrons
d)
Lose 1 electron
12.
If sodium created an ion, it will have what charge?
a)
+1
b)
+2
c)
-1
d)
-2
13.
Cations are
a)
positive
b)
negative
c)
on the right side of the periodi table.
d)
nonmetals
14.
Nitrogen has how many valence electrons?
a)
7
b)
5
c)
1
d)
8
15.
Nitrogen will do what to gain a stable octet?
a)
Lose 3
b)
Gain 3
c)
Lose 1
d)
Gain 2
16.
What will nitrogen's charge be as an ion?
a)
+3
b)
-3
c)
0
d)
-1
17.
If Magnsium (+2) and Oxygen (-2) bonded together what would be their chemcial formula?
a)
Mg2O2
b)
MgO
c)
Mg2O
d)
MgO2
18.
If Potassium (+1) and Sulfur (-2) bonded together the chemical formula would be
a)
K2S2
b)
K2S
c)
KS2
d)
KS
19.
If Aluminum (+3) and Oxygen (-2) bonded together its chemical formula would be ...
a)
AlO
b)
Al2O
c)
Al3O2
d)
Al2O3
20.
Name CCl4
a)
carbon carbon tetraiodide
b)
carbon tetrachloride
c)
monocarbon tetrachloride
d)
water
21.
What is the prefix for 8?
a)
non
b)
tri
c)
di
d)
oct
22.
Which is the correct name for AlBr3?
a)
Aluminum tribromide
b)
Bromine aluminide
c)
Aluminum bromide
d)
Aluminum (III) bromide
23.
What is the name for LiF?
a)
Lithium Fluoride
b)
Lithium Fluorine
c)
Fluorine Lithide
d)
Lithium monofluoride
24.
This is used to represent the number of each atom being represented.
a)
A Exponent
b)
The Coefficient
c)
A Molecule
d)
The Subscript
25.
How many hydrogen atoms are in this chemical formula:
a)
4 hydrogen atoms
b)
1 hydrogen atom
c)
2 hydrogen atoms
d)
3 hydrogen atoms
26.
How many oxygen atoms are in this chemical formula?
a)
7 oxygen atoms
b)
4 oxygen atoms
c)
3 oxygen atoms
d)
1 oxygen atoms
27.
How many oxygen atoms are in this chemical formula?
a)
6 oxygen atoms
b)
2 oxygen atoms
c)
3 oxygen atoms
d)
4 oxygen atoms
28.
Law of conservation of mass states that
a)
matter is created
b)
matter is destroyed
c)
matter is neither created nor destroyed
d)
matter does not change
29.
True or false. Law of conservation of mass means that the number of atoms of the products is more than the number of atoms in the reactants.
a)
True
b)
False
30.
A flask with vinegar in it has a mass of 160 grams. A balloon with baking soda in it has a mass of 40 grams. The balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. The balloon inflates to a large volume. What will the total mass of the balloon and flask be after the balloon inflates? Explain.
a)
Less than 200 grams because the solid baking soda disappears.
b)
200 grams, because all the atoms remain in the balloon or flask.
c)
More than 200 grams because the size of the balloon is so much larger.
d)
Less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.
31.
reactant→product
If there are 35 grams of reactant, how many grams of product are produced by the chemical reaction?
If there are 35 grams of reactant, how many grams of product are produced by the chemical reaction?
a)
17.5 g
b)
20 g
c)
35 g
d)
70 g
32.
What are the chemicals on the right side of the arrow in a chemical equation called?
a)
product
b)
reactant
c)
chemicals
d)
mass
33.
What are the chemicals on the left side of the arrow in a chemical equation called?
a)
reactant
b)
product
c)
chemical
d)
mass
34.
What law says that the mass of the reactants should equal the mass of the products in a chemical equation?
a)
Law of Constant Mass
b)
Law of Conservation of Mass
c)
Law of Preservation of Mass
d)
Law of Balance of Mass
35.
Which coefficients balance this equation: Na + Cl2 ---> NaCl
a)
2,1,1
b)
2,1,2
c)
2,2,1
d)
1,2,2
36.
What numbers balance the equation:
_Pb(SO4) +_NaCl -> _PbCl2 + _Na2(SO4)
_Pb(SO4) +_NaCl -> _PbCl2 + _Na2(SO4)
a)
2,1,2,2
b)
1,1,2,2
c)
1,2,1,1
d)
1,2,1,2
37.
What numbers balance the equation:
_H2 + _O2 --> _H2O
_H2 + _O2 --> _H2O
a)
2,1,2
b)
1,2,1
c)
1,1,2
d)
2,1,1
38.
What is the oxidation number for Calcium?
a)
+1
b)
+2
c)
-1
d)
-2
39.
Which is the correct equation for this reaction: Sodium Phosphide + Boron oxide --> Sodium oxide + Boron phosphide
a)
3Na3P + B2O3 --> 2Na2O + 2BP
b)
2Na3P + B2O3 --> 3Na2O + 2PB
c)
2NaP3 + B3O2 --> 3NaO2 + B3P
d)
2Na3P + B2O3 --> 3Na2O + 2BP
40.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
41.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
42.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
43.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
44.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
45.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
46.
HgO --> Hg + O2
a)
Synthesis
b)
Decomposition
c)
Single
d)
Combustion
47.
Mg + HCl --> MgCl2 + H2
a)
Single Displacement
b)
Double
c)
Combustion
d)
Synthesis
48.
Zn + H2SO4 --> ZnSO4 + H2
a)
Combustion
b)
Single Displacement
c)
Double
d)
Decomposition
49.
H2 + O2 --> H2O
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single
50.
What coffecients would balance the following chemical equation:
Al2O3 → Al + O2
Al2O3 → Al + O2
a)
1, 1, 1
b)
1, 2, 1
c)
4, 5, 1
d)
2, 4, 3
51.
potassium nitride
a)
K3N2
b)
K2N
c)
KN3
d)
K3N
52.
What is the correct name for the compound PH3?
a)
Monophosphorus trihydride
b)
Phosphorus hydride
c)
Trihydrogen monophosphide
d)
Phosphorus trihydride
53.
A covalent bond is formed when two atoms ____ electrons
a)
share
b)
lose
c)
transfer
d)
gain
54.
Ionic compounds are formed when one or more valence electrons are transferred from _____
a)
a nonmetal atom to a metal atom
b)
a nonmetal atom to a nonmetal atom
c)
a metal atom to a nonmetal atom
d)
a metal atom to a metal atom
55.
Which of the following is NOT TRUE about covalent compounds?
a)
They have low melting and boiling points.
b)
They are formed from 2 nonmetals.
c)
They can conduct electricity when dissolved in water (aqueous).
56.
True or False: Ionic compounds are usually liquids at room temperature.
a)
True
b)
False
100 %
