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WorksheetsUnit 2 Chem Exam
Total questions: 25
Worksheet time: 13mins
Based on the periodic table, which element shares common properties with Sodium (Na)
Ca
Cs
Be
Ne
Which of the following is a characteristic of the group 15 elements
they have 15 protons
they have 15 neutrons
they have 5 core electrons
they have 5 valence electrons
which other element is likely to bond with oxygen similarly to magnesium in the compound MgO
Ca, it belongs to group 2
Na, it belongs to group 1
K, it belongs to group 2
C, it belongs to group 1
A Sodium atom has ____ valence electron(s)
A chlorine atom has ____ valence electron(s)
1;7
11;17
7;17
1;11
the octet rule states that atoms tend to form bonds so that each atoms has eight ____ in its ____ shell
Protons; core
electrons; valence
neutrongs; inner
electrons; ,middle
Which of the following statements are NOT true once the sodium chloride bond formation takes place?
the resulting sodium cation has a stable octet in its valence shell
the resulting chloride anion has a stable octet in its valence shell
the electrostatic attraction between the positive sodium ion and negative chlorine forms a non-polar bond
the electrostatic attraction between the positive sodium ion and the negative chlorine forms an ionic bond
What is the correct name of Name BCl3
Boron (3) Chloride
Boron Trichloride
Boron Chloride
Boron (III) Chloride
A mystery element has 18 protons. which of the following statements is true about the element?
the element belongs in row 2 of the periodic table and is classified as a halogen
the element belongs in row 3 of the periodic table and is classified as a noble gas
the element belongs in row 4 of the periodic table and is classified as an alkali metal
the element belongs in row 5 of the periodic table and is classified as an alkaline earth metal
which arrangement of the following period 5 elements, from left to right, orders them with respect to their atomic size, from smallest to largest?
Rb; Sr; In: Sb; Te
In; Rb; Sb; Sr; Te
Te; Sb; In; Sr; Rb
In; Sb; Te; Rb; Sr
which list arranges the elements Na, Li, K, Rb, and Cs in order of increasing ionization energy. (from left to right)
Cs; Rb; K; Na; Li
Cs; Li; Na; K; Rb
Na; Li; K; Rb; Cs
Li; Na; K; Rb; Cs
Which statement best describes noble gases?
Noble gases often gain electrons to combine with other electrons
Noble gases have seven electrons in their valence shell and combine easily with group 1A atoms to a form compounds
Noble gases have only one electron in their valential and can find easily with 7A atoms to form a compounds
Noble gases tend to not combine with other elements
The total number of protons and neutrons in the nucleus of an atom is the...
Mass number
Atomic number
Average atomic mass
Avogadro's number
all isotopes of hydrogen contain
Two electrons
One proton
One Neutron
Two nuclei
Which intermolecular forces always act between nonpolar molecules
Dipole-dipole
Ionic
Hydrogen bonding
London dispersion
What is the name of a molecule CCL4
Monocarbonide tetrachloride
Tetracarbon monochloride
Carbon monochloride
Carbon tetrachloride
The bond between two atoms of iodine
Ionic and is formed by the transfer of 2 valence electrons
Covalent in is formed by the transfer of two valence electrons
Ionic and it's formed by the sharing of two valence electrons
Covalent and is formed by the sharing of two valence electrons
MgCl2
covalent
ionic
Name MgCl2
Magnesium Dichloride
Monomagnesium Dichloride
Magnesium Chloride
Magnesium monochloride
Iron (III) Bromide
FeBr3
Fe3Br
FeBr
Fe (III) Br
Sodium Carbonate
NaCO3
Na2Co3
Na3Co2
Na2CO
Triboron Pentasulfide
B3S5
B5S3
BS
B3S
What type of bond is N2
Covalent
Triple Covalent
Ionic
None of the above
