WorksheetsElectron Dance
Total questions: 6
Worksheet time: 25mins
Electrons are the subatomic particles that orbit the nucleus of
all atoms, While the protons are inside the atom’s nucleus and have a
positive charge, electrons (e-) have a negative charge. They will almost
always equal the number of protons. The number of protons is easy to
find for each atom/element as they are the same as the atomic
number.
The number of (a) is easy to find for each atom/element as they are the same as the atomic number.
What are electrons?
Subatomic particles that orbit the nucleus of atoms
Particles that make up the nucleus of atoms
Particles that have a positive charge
Particles that have a negative charge
Electrons have a negative charge and almost always equal the number of (a) .
The electrons outside the nucleus have their own way of being arranged so that they are a major part of the of the atom. While the # of protons (p+) controls what the element will be, electrons also hold a special function in atoms. The e- arrangement or configuration determine many of the chemical and physical properties of atoms.
What is the significance of electron arrangement outside the nucleus?
It determines the chemical properties of an element.
It determines the mass of an atom.
It determines the number of protons in an atom.
It determines the temperature of an atom.
Electrons are a major part of the (a)
The electron configuration is important for understanding (a)
What determines the element of an atom?
The number of protons
The number of electrons
The number of neutrons
The number of valence electrons
What determines many of the chemical and physical properties of an atom?
The arrangement of protons in an atom
The arrangement of neutrons in an atom
The arrangement of electrons in an atom
The size of an atom
The electrons circle around the atoms nucleus in atomic orbitals.
The orbitals (Energy levels) are weaker the closer they are to the nucleus
and get stronger the further away they are. All the electrons an atom has
are arranged in these e- configuration. The orbitals are also known as
shells. There are 4 shells the K, L, M, N. Each shell can only hold a
certain number of electrons and works with the others to hold all the electrons.
This is based on the idea of quantum number where n is the number of the
shell squared and multiplied by 2 ( 2*n2= # e-).
How many shells are there in the Summary of Atomic Orbitals?
2
3
4
5
What is the role of each shell in holding electrons?
Each shell can hold an unlimited number of electrons
Each shell can hold a certain number of electrons and work independently
Each shell can hold a certain number of electrons and work together with other shells
Each shell can hold a certain number of electrons and work against other shells
What are the orbitals also known as?
Nucleus
Electrons
Protons
Shells
Which statement accurately describes the relationship between the energy levels of orbitals and their proximity to the nucleus?
The orbitals become stronger as they get closer to the nucleus.
The orbitals remain the same strength regardless of their proximity to the nucleus.
The orbitals are weaker the closer they to the nucleus.
The orbitals have no relationship with their proximity to the nucleus.
What does the n equal to for the equation 2*n2= .
the # of protons
the # of neutrons
the # of the energy level.
Which of these would make a total of 8 e- in an orbital.
2*32
2*42
2*22
2*12
Which of these would make a total of 2 e- in an orbital.
2*32
2*42
2*22
2*12
Which of these would make a total of 32 e- in an orbital.
2*32
2*42
2*22
2*12
Knowing where the electrons go the atoms can help determine the valance electrons ve. These are the atoms in the outermost shell/energy level of an electron. Many times elements that have have the same electron configuration and valence electrons will have the dame physical and chemical properties, allowing us to prediction what they might or might not do. We can look at the period and group that an element is found in to so how the electrons can be configured, The elements period can tell us how many shells they have, while the group will tell you it’s ve.
What can knowing the valence electrons of atoms help determine and or predict?
The electron configuration of atoms
The physical/chemical properties of atoms
The chemical properties of atoms
The atomic number of atoms
What does the group of an element indicate?
Atomic number
Valence electrons
Electron configuration
Ionization energy
Elements with the same electron configuration and valence electrons often have ______ properties.
different
similar
opposite
unique
What does the period of an element indicate?
The number of valence electrons it has
The number of electron shells it has
The atomic number of the element
The mass number of the element
The shells are just the beginning of the configuration. There are subshells that help fill in the main shell. These are the s, p, d and the f. Each of these shells can only hold a certain number of e-‘s. Each shell is made of a combination and sub-shells. For example the K shell is made of 1s2. The 1 is the energy level (K), the letter is the orbit and the number is the number of electron the orbital (sub-shell) has.
Which are subshells?
M
s
L
p
What is the significance of the shells in electron configuration?
They determine the chemical properties of an element
They indicate the number of valence electrons
They represent the energy levels of electrons
They determine the atomic number of an element
What are electron shells made of?
Protons and neutrons
Shells and sub-shells
Atoms and molecules
Nucleus and orbitals
What is the maximum number of electrons that f can hold?
2
8
14
32
What is the composition of the K shell?
1s2
2s2
2p6
3s2
