Struckure ot atom handourt 4pages NAME ATOMIC STRUCTURE WORKSHEET Atoms are composed of three sub-atomic particles: the proton, the neutron, and the electron. The proton and the neutron are found in the nucleus. Electrons are found in a cloud surrounding the nucleus. DATE PERIOD The atomic number of an element is equal to the number of protons in that element. If the atom is neutral, the number of electrons (-) is equal to the number of protons (+). If the atom carries a charge, it is referred to as an ion. The charge on an ion indicates an imbalance between protons and electrons. If the ion has a positive charge, there are more protons than electrons. To find the number of electrons, you must subtract the charge from the atomic number. If the ion has a negative charge, there are more electrons than protons. To find the number of electrons, you must add the charge to the atomic number. The mass number is a whole number equal to the number of protons plus neutrons. This is because we say that protons and neutrons each have a mass of 1 amu (standardized from Carbon-12). This number is not on the periodic table. The atomic mass is the weighted average atomic mass of all the naturally occurring isotopes of an element. This number is located on the periodic table and is usually a decimal. (Remember, an isotope is an atom of the same element with a different number of neutrons; an ion is an atom of the same element with a different number of electrons.) X= element A=mass number (# of protons +# of neutrons) Z= atomic number (# of protons) A -Z=# of neutrons Isotopic symbol is in this form: Mass number Charge 26 13A1 3 Atomic number Element symbol Or, you might see: X-A Example: Aluminum - 26 Complete the chart. Atomic Number Mass Number Element/Ion Atomic Mass Protons Neutrons Electrons 41 20 Ca 108 47Ag 108 474gl+
Struckure ot atom handourt 4pages NAME ATOMIC STRUCTURE WORKSHEET Atoms are composed of three sub-atomic particles: the proton, the neutron, and the electron. The proton and the neutron are found in the nucleus. Electrons are found in a cloud surrounding the nucleus. DATE PERIOD The atomic number of an element is equal to the number of protons in that element. If the atom is neutral, the number of electrons (-) is equal to the number of protons (+). If the atom carries a charge, it is referred to as an ion. The charge on an ion indicates an imbalance between protons and electrons. If the ion has a positive charge, there are more protons than electrons. To find the number of electrons, you must subtract the charge from the atomic number. If the ion has a negative charge, there are more electrons than protons. To find the number of electrons, you must add the charge to the atomic number. The mass number is a whole number equal to the number of protons plus neutrons. This is because we say that protons and neutrons each have a mass of 1 amu (standardized from Carbon-12). This number is not on the periodic table. The atomic mass is the weighted average atomic mass of all the naturally occurring isotopes of an element. This number is located on the periodic table and is usually a decimal. (Remember, an isotope is an atom of the same element with a different number of neutrons; an ion is an atom of the same element with a different number of electrons.) X= element A=mass number (# of protons +# of neutrons) Z= atomic number (# of protons) A -Z=# of neutrons Isotopic symbol is in this form: Mass number Charge 26 13A1 3 Atomic number Element symbol Or, you might see: X-A Example: Aluminum - 26 Complete the chart. Atomic Number Mass Number Element/Ion Atomic Mass Protons Neutrons Electrons 41 20 Ca 108 47Ag 108 474gl+
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Can someone help me with atoms worksheet
Transcribed Image Text:Structure of atom handourt 4Pages
NAME
ATOMIC STRUCTURE WORKSHEET
Atoms are composed of three sub-atomic particles: the proton, the neutron, and the electron. The proton
and the neutron are found in the nucleus. Electrons are found in a cloud surrounding the nucleus.
DATE
PERIOD
The atomic number of an element is equal to the number of protons in that element. If the atom is neutral,
the number of electrons (-) is equal to the number of protons (+).
If the atom carries a charge, it is referred to as an ion. The charge on an ion indicates an imbalance
between protons and electrons. If the ion has a positive charge, there are more protons than electrons. To
find the number of electrons, you must subtract the charge from the atomic number. If the ion has a
negative charge, there are more electrons than protons. To find the number of electrons, you must add the
charge to the atomic number.
The mass number is a whole number equal to the number of protons plus neutrons. This is because we say
that protons and neutrons each have à mass of 1 amu (standardized from Carbon-12). This number is not on
the periodic table. The atomic mass is the weighted average atomic mass of all the naturally occurring
isotopes of an element. This number is located on the periodic table and is usually a decimal.
(Remember, an isotope is an atom of the same element with a different number of neutrons; an ion is an
atom of the same element with a different number of electrons.)
X= element
A=mass number (# of protons +# of neutrons)
Z= atomic number (# of protons)
A - Z = # of neutrons
Isotopic symbol is in this form:
Mass number
Charge
26
13A1
Atomic number
Element symbol
A
Or, you might see: X-A Example: Aluminum - 26
Complete the chart.
Atomic
Mass
Element/Ion
Number
Atomic Mass
Protons
Neutrons
Electrons
Number
41
Ca
20
108
474g
108
474gl+
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