WorksheetsChem 3.01 Pre-Assessment
Total questions: 29
Worksheet time: 52mins
Orbital
a region in an atom where there is a high probability of finding electrons.
an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.
The energy level at which electrons orbit the nucleus of an atom
a subdivision of electron shells
Valence Electron
a region in an atom where there is a high probability of finding electrons.
an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.
The energy level at which electrons orbit the nucleus of an atom
a subdivision of electron shells
Electron Shell
a region in an atom where there is a high probability of finding electrons.
an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.
The energy level at which electrons orbit the nucleus of an atom
a subdivision of electron shells
Electron Subshell
a region in an atom where there is a high probability of finding electrons.
an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.
The energy level at which electrons orbit the nucleus of an atom
a subdivision of electron shells
1s22s22p63s23p6
4s23d104p6
How many electrons can the first energy shell hold?
1
2
8
0
Which of the following pictures represents energy shells around an atom (Chem 3.01 Lv 1)
Electrons occupy space around the nucleus at ____________. (Chem3.01 Lv1)
certain energy levels
a specific points and never move
at random locations
anywhere it wants to be
According to the energy shell model, an electron cannot reside at ___ in this figure?
A
B
C
D
Other than forming a larger circle what is the difference between point A, B, and D in this diagram? (Chem3.01 Lv2)
They are all different letters
They are at different energy levels
They make larger circles around the nucleus
They are all at the same energy level
How can the energy shells around the nucleus be described?(Chem3.01 Lv2)
They are all identical to each other just larger orbits
Each energy shell has electrons at different energy levels
That the shells get harder as you move away from the nucleus
Energy shells or levels are a scientific myth
Which electron would have the most energy? (Chem3.01 Lv3)
An electron in energy shell 1
An electron in energy shell 2
An electron in energy shell 4
An electron in energy shell 3
Which statement is true about electrons in different energy shells? (Chem 3.01 Lv3)
Electrons closest to the nucleus have the lowest energy, while the electrons farthest away from the nucleus have the highest energy.
Electrons closest to the nucleus have the highest energy, while the electrons farthest away from the nucleus have the lowest energy.
All electrons in different energy shells have the same amount of energy.
Electrons only have one energy there so they only exist at one energy shell.
What do energy subshells represent in an atom model? (Chem3.01 Lv2)
The most likely region an electron at that energy shell can be found
Energy shells are not enough so they have to be broken down into subshells
What is an energy subshell?
Where you have to set up the electron detector.
How can you determine the number of subshells an energy shell has? (Chem3.01 Lv2)
An energy shell has a number of subshells equal to its energy shell number. For example, energy shell 1 has 1 subshell.
You can up the number of electrons and divide by the number of shells.
You can only determine the number by observing the atom
An energy shell has an equal number of subshells. All energy levels have 4 subshells.
Looking at the following figure, how many subshells will the outermost shell have? (Chem3.01 Lv2)
1
2
3
4
Which of the following are correct about orbitals? (Chem3.01 Lv3)
s type subshells have 1 orbital, p-type has 3 orbitals, d type has 5 orbitals, and f type has 7 orbitals.
s type subshells have 7 orbitals, p-type has 5 orbitals, d type has 3 orbitals, and f type has 1 orbital.
s type subshells have 1 orbital, p-type has 7 orbitals, d type has 5 orbitals, and f type has 3 orbitals.
They all have the same number of orbitals.
