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WorksheetsScience Review Quiz
Total questions: 20
Worksheet time: 12mins
Who formulated the "uncertainty principle"?
Erwin Schrodinger
James Maxwell
Louise de Broglie
Werner Heisenberg
Where are the electrons usually found according to the atomic theory?
in the atomic nucleus
outside the nucleus
anywhere they want to be
What is the region around the atomic nucleus where the electron is mostly found?
Energy level
Atomic orbital
Atomic blocks
Chemical bond
Which is the lowest value that the principal energy level may have?
0
1
2
3
How many valence electrons does an atom require to have a full shell?
4
8
16
32
Which explains the filling up of the orbital in the order of increasing energy?
Hund’s Rule
Dalton’s Atomic Theory
Aufbau principle
Pauli’s Exclusion Principle
It is a force that holds the atom together in a compound.
Chemical bond
Chemical formula
Energy level
Atomic orbital
What is the charge of O in the CaO compound?
+1
-1
-2
+3
What is the maximum number of electrons with l = 0
1
2
4
8
A charged particle that has gained at least one electron is called a(n)____.
Anion
Cation
Protons
Electrons
Which elements below will likely form an ionic bond?
Li, Si, F, Ne
Li and F
Si and F
Li and Ne
Si and Ne
Element X is a group IIA element, while Y belongs to group VIIA.
What is the chemical formula of the compound of X and Y?
XY
X2Y
XY2
Y2X
The spin quantum number refers to ______________.
energy level the electron is in
orientation of orbitals around nucleus
direction of electron spin
sublevel or shape of the orbital the electron is in
An electron in the 2nd energy level can have a principle quantum number of _________.
0
1
2
3
Which type of elements usually forms the positive ion?
Metals
Non-metals
Metalloids
Chlorine is in group 7, what charge would a chloride ion have?
-1
-2
-3
-7
How does an oxygen atom become an oxide ion with a charge of -2?
it gains 2 electrons
it shares 2 electrons
it loses 2 electrons
Why do atoms react with one another to form chemical bonds?
to attain stability
to form molecules
to form compounds
to produce ions
Which corresponds to the electron configuration of the Silicon atom, (Si - 14)?
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s2 3p2
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p64s2
How many electrons are there in the fourth energy level of the atom with atomic number 34?
4
6
8
10
