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WorksheetsAtoms, Bonding, Chemical Reactions, and pH
Total questions: 21
Worksheet time: 21mins
Name
Class
Date
1.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
2.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
3.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
4.
An atoms overall charge is generally
a)
positive
b)
depends on its mood
c)
neutral
d)
negative
5.
Which of these is the electron?
a)
A
b)
B
c)
C
d)
D
6.
Which number here is my atomic number?
a)
5
b)
10.811
7.
How many Electrons
a)
2.5
b)
5
c)
6
d)
10.81
8.
In order for me to find the number of neutrons, I must round the atomic mass and then do what?
a)
atomic number-atomic mass
b)
atomic number x atomic mass
c)
atomic mass + atomic number
d)
atomic mass - atomic number
9.
Are the atoms more stable when they are bonded together or when they are apart?
a)
Bonded Together
b)
Apart
10.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
11.
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
12.
What is an ionic bond?
a)
When two ions are held to each other by attraction of between the opposite charges
b)
When ions seperate by force
c)
None of the above
13.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
14.
Isotopes are atoms of the same element with a different amount of
a)
protons
b)
neutrons
c)
electrons
d)
atoms
15.
Two or more atoms chemically joined are called...
a)
atoms
b)
ionics
c)
covalents
d)
compounds
16.
What is a reactant?
a)
The chemical substances on the left side or flat side of the arrow
b)
The chemical substances on the right side or pointed side of the arrow
17.
What is a product?
a)
The substances that come out of the chemical reaction.
b)
The beginning substacnes
18.
The substances that are present before a reaction are the...
a)
reactants
b)
products
c)
both of these
d)
neither of these
19.
The energy required to start a reaction is called the...
a)
catalyst
b)
inhibitor
c)
activation energy
d)
exergonic heat
20.
In a chemical equation, the substances that are on the right side/ pointed side of the arrow are the...
a)
reactants
b)
products
c)
catalysts
d)
inhibitors
21.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
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