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WorksheetsBonding
Total questions: 46
Worksheet time: 27mins
Name
Class
Date
1.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
2.
Look at the element from the periodic table. What is this element's atomic number?
a)
Carbon
b)
6
c)
C
d)
12.011
3.
Why is water NOT on the periodic table?
a)
It is naturally occuring
b)
It is a compound, not an element
c)
It exists as a solid, a liquid, and a gas
d)
Its chemical formula doesn't fit
4.
The atomic mass of an element tells you what?
a)
The number of electrons.
b)
The number of protons.
c)
The number of protons and neutrons.
d)
The number of protons and electrons.
5.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
6.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
7.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
8.
How many valence electrons do elements in Group 1, the Alkali Metals, have?
a)
1
b)
2
c)
6
d)
7
9.
A charged particle that has gained or lost electrons is called a _______.
a)
molecule
b)
ion
c)
isotope
d)
element
10.
Ionic bonds form between metals and ____.
a)
metalloids
b)
metals
c)
nonmetals
11.
Electrons are ______ in covalent bonds.
a)
Shared
b)
Transferred
c)
Given up
d)
Lost
12.
Electrons are _______ in ionic bonds.
a)
Shared
b)
Transferred
13.
What type of elements make up covalent bonds?
a)
Nonmetal only
b)
Metal and Nonmetal
c)
Metal Only
d)
Metalloids and Nonmetals.
14.
Covalent bonds form between two ____.
a)
metalloids
b)
metals
c)
nonmetals
15.
According to the diagram below, how many bonds will this atom need to make to be stable?
a)
1
b)
2
c)
3
d)
4
16.
Carbon dioxide is a ______ bond.
a)
ionic
b)
covalent
17.
Which elements tend to gain electrons?
a)
metals
b)
nonmetals
18.
In nonpolar covalent bonding, electrons are shared
a)
equally
b)
unequally
c)
pulled apart
19.
The rows (or Periods) on the Periodic Table can be used as a tool that shows you...
a)
The number of valence electrons.
b)
The number of orbitals of an element.
20.
What do the columns (or Groups) represent on the Periodic Table?
a)
The number of valence electrons an element has.
b)
The number of orbitals an element has.
21.
Which part of the atom is responsible for chemical bonding?
a)
Inner/Core Electrons
b)
Outer/Valence Electrons
c)
Protons
d)
Neutrons
22.
Where are valence electrons located?
a)
In the inner-most shell of an atom.
b)
In the outer-most shell of an atom.
c)
Between the inner and outer shells of an atom.
d)
Inside the nucleus of an atom.
23.
How many valence electrons do most atoms need to have a complete outer orbital and be happy?
a)
1
b)
8
c)
10
d)
5
24.
Which two elements only need two valence electrons to be happy?
a)
Hydrogen and Helium
b)
Lithium and Neon
c)
Copper and Iron
d)
Californium and Berkelium
25.
How do ions form?
a)
Atoms gain or lose electrons to fill or empty the valence shell.
b)
Atoms like cats so they become "pawww-sitive".
c)
Atoms gain or lose electrons to change their atomic mass.
d)
Atoms gain or lose electrons to match the number of neutrons.
26.
If an element gains an electron, will it form a positive ion or a negative ion?
a)
Positive.
b)
Negative.
c)
Neutral.
27.
Hydrogen is classified as a ________.
a)
Metal
b)
Nonmetal
28.
In polar covalent bonding, electrons are shared
a)
equally
b)
non equally
c)
pulled apart
29.
Which is NOT true about Noble Gases?
a)
They are the most stable atoms.
b)
They have 8 valence electrons.
c)
They are highly reactive.
d)
They are used to make neon signs.
30.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
31.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
32.
What is the correct formula for this molecule?
a)
Si4F
b)
SiF4
c)
SiF
d)
Si4F4
33.
If Potassium (1+) and Sulfur (2-) bonded together the chemical formula would be...
a)
K2S2
b)
K2S
c)
KS2
d)
KS
34.
Activation energy is required to start a chemical reaction. What is activation energy?
a)
The energy needed for a reaction to occur.
b)
The minimum amount of energy needed for a reaction to potentially occur.
c)
The energy added by a catalyst.
d)
The energy possessed by the products.
35.
Which of the following slows down the rate of a chemical reaction?
a)
Place the reactants in hot water.
b)
Place the products in ice bath.
c)
Place the reactants in a ice bath.
d)
Keep stirring the reactants with a stirring rod.
36.
Which factors increase the rate of a reaction.
a)
increasing temperature
b)
increasing concentration
c)
increasing surface area
d)
all of these
37.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
38.
Exothermic reactions release heat to the surroundings.
a)
True
b)
False
39.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________.
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
40.
Chemical reactions that absorb energy are known as ________________________.
a)
Endothermic
b)
Exothermic
c)
Boring
d)
Explosive
41.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
42.
Isotopes are elements with a different amount of
a)
protons
b)
neutrons
c)
electrons
d)
atoms
43.
Which statement best describes what it means to be a polar molecule?
a)
Part of the molecule is negative, while another part is positive
b)
The molecule has more electrons than protons
c)
The molecule has no charge
d)
Polar molecules have more than 2 atoms.
44.
This molecule is polar.
a)
True.
b)
False.
45.
Which of these is NOT something that speeds up a chemical reaction?
a)
Surface Area
b)
Catalyst
c)
Concentration
d)
Endothermic
46.
Which reaction feels hot when you touch it?
a)
Endothermic
b)
Exothermic
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