WorksheetsUnit 4: Chemical Bonds & Equations
Total questions: 54
Worksheet time: 54mins
Name
Class
Date
1.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
2.
What usually forms the positive ion?
a)
Metal
b)
Non Metals
c)
None
3.
What happens when the sodium atom loses an electron?
a)
It become negatively charged
b)
It become positively charged
c)
none
4.
What usually forms the negative ion?
a)
nonmetals
b)
metal
c)
none
5.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
6.
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
7.
What happens when an atom loses an electron?
a)
Neutral (no charge)
b)
Positive charge
c)
Negative charge
8.
What happens when an atom gain an electron?
a)
Neutral(no charge)
b)
Positive charge
c)
Negative charge
9.
What charges attract?
a)
Opposite
b)
Same
10.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
11.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
12.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
13.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
14.
Predict the bond that will form between Sr and S.
a)
Ionic
b)
Covalent
15.
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.
16.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
17.
Is Hydrogen considered a metal or a non-metal?
a)
Metal
b)
Non-metal
18.
When an atom loses an electron, it becomes a:
a)
positive ion
b)
negative ion
c)
neutral ion
d)
neutral atom
19.
This atom will
a)
lose 1 electron
b)
gain 1 electron
c)
lose 7 electrons
d)
gain 7 electrons
e)
do nothing
20.
Why do atoms bond?
a)
to find a date
b)
to become bigger
c)
to go to dog jam
d)
to become stable
21.
This atom will
a)
gain 1 electron
b)
lose 1 electron
c)
gain 7 electrons
d)
lost 7 electrons
e)
do nothing
22.
Which family of elements does not form ions or bond with other elements?
a)
alkali metals
b)
halogens
c)
alkaline earth metals
d)
rare earth elements
e)
noble gases
23.
The octet rule states that atoms are more stable when they
a)
have more protons than electrons
b)
have more electrons than protons
c)
have a full outer shell
d)
have a partial outer shell
24.
How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
a)
2
b)
4
c)
6
d)
8
25.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
26.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
27.
Element or compound?
H2O
H2O
a)
element
b)
compound
28.
Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)
three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
29.
Which is the correct formula for:
one carbon (C)
two oxygen (O)
one carbon (C)
two oxygen (O)
a)
CO2
b)
CO
c)
C2O
d)
2CO
30.
How many elements are in H2O?
a)
1
b)
2
c)
3
d)
4
31.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
32.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
33.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
34.
The substances at the beginning of a chemical equation are called the ____
a)
product
b)
yield
c)
chemical symbol
d)
reactants
35.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
36.
In a chemical reaction, everything to the rightof the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
37.
Black = Carbon (C)
White = Hydrogen (H)
What would be the formula for ethane?
White = Hydrogen (H)
What would be the formula for ethane?
a)
CH4
b)
CH6
c)
C2H2
d)
C2H6
38.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
39.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
Fe + S --> FeS
a)
balanced
b)
unbalanced
40.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
41.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
42.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
43.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
44.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
45.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
46.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
47.
A molecule is smaller than an atom.
a)
True
b)
False
48.
How many Oxygen (O) atoms are in 2C2HO8Cl2
a)
2
b)
16
c)
8
d)
5
49.
A molecule is________
a)
a glob of gelatinous goo
b)
smaller than an atom
c)
filled with raisons
d)
more than one atom bonded together
50.
Which is the Law of Conservation of Matter?
a)
matter cannot be created or destroyed, it only changes form
b)
matter can be created but it cannot be destroyed, it never changes form
c)
matter can be destroyed but it cannot be created, it usually just changes form
d)
matter is an unproven theory created by Hans Geiger
51.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
52.
In the following equation, what are the products?
HCl + Zn → H2 + ZnCl2
HCl + Zn → H2 + ZnCl2
a)
HCl + Zn
b)
H2 + ZnCl2
c)
Zn → H2
d)
the stuff on the outside
53.
Fill in the blank to balance the chemical equation.
2KI + ____Cl2 → 2KCl + I2
2KI + ____Cl2 → 2KCl + I2
a)
1
b)
2
c)
3
d)
4
54.
What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl3 + 3H2
2Al +____ HCl → 2AlCl3 + 3H2
a)
2
b)
4
c)
3
d)
6
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