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WorksheetsUnit 3/Final Review: Atoms, Elements, and Molecules
Total questions: 20
Worksheet time: 17mins
What is the smallest particle of an element that keeps all of the properties of that particular element?
Electrons
Protons
Atoms
Neutrons
What are the subatomic particles of an atom and their respective charges?
Electrons (+ charge), protons (neutral charge), neutrons ( - charge)
Protons (neutral charge), electrons ( - charge), neutrons (+ charge)
Electrons ( - charge), protons (+ charge), neutrons (neutral charge)
Ions (+ charge), molecules (neutral charge), elements (- charge)
What does the number 16 in the isotope name "oxygen - 16" represent?
It represents the mass number which is the number of protons PLUS the number of neutrons.
It represents the atomic number which is the the number of protons only.
It represents the number of electrons orbiting the nucleus of a neutral atom.
It represents the mass number which is the number of neutrons only.
What is the isotope symbol for krypton - 86?
A sample of Sodium-26 has how many protons, neutrons, and electrons in its atoms?
26 protons, 11 neutrons, and 11 electrons
26 protons, 26 neutrons, and 15 electrons
15 protons, 15 neutrons, and 15 electrons
11 protons, 15 neutrons, and 11 electrons
What are the electrons found in the outermost energy level of an atom called?
Core electrons
Binding electrons
Valence electrons
Bonding electrons
What is the maximum number of electrons that can fit in the first energy level?
8
2
6
4
How many electrons can fit in the second energy level?
8
2
6
4
What is the electron configuration for calcium?
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p6 4s2
1s2 2s2 2p6 3s6
Which rule about the quantum model of electrons states that only a maximum of two electrons can occupy any orbital?
Hund's Rule
Aufbau Principle
Pauli-exclusion Principle
The Bohr model
Where are the metal elements mostly located on the periodic table and where are the nonmetal elements mostly located on the periodic table?
Nonmetals are located mostly on the right-hand side and metals are located mostly on the left-hand side.
Metals are located mostly in the p-block and and nonmetals are located mostly in the s-block.
There is no specific organization of elements on the periodic table.
Metals are located on the right-hand side and nonmetals are located on the left-hand side.
According to the periodic table, horizontal rows are known as ________ and vertical columns are known as ____________.
periods, groups (or families)
groups (or families), periods
shells, orbitals
subshells, shells
An ionic bond is made between which two types of elements?
Metalloids and metals
Nonmetals and gases
Solids and gases
Metals and nonmetals
A covalent bond is made between what type(s) of elements?
Only metal elements
Only metalloid elements
Only nonmetal elements
Metal and nonmetal elements
Magnesium is a group 2A metal. What ionic charge do metals from group 2A usually form?
1+ charge
2+ charge
1- charge
2- charge
How many total electrons does a strontium (Sr) ion have?
38 electrons
37 electrons
36 electrons
Need more information to answer.
The metals in Groups 1A, 2A, and 3A form ions by __________.
sharing electrons
gaining electrons
losing electrons
losing protons
Which pair of elements would form an ionic bond?
Carbon (C) and Oxygen (O)
Strontium (Sr) and Chlorine (Cl)
Caesium (Cs) and Germanium (Ge)
Magnesium (Mg) and Aluminum (Al)
The formula unit for the ionic compound magnesium nitride is written _______________.
MgN
Mg3N2
Mg2N3
Mg2N5
The name of the ion S2- is the _________ ion.
sulfur
sulfite
sulfide
sulfate
