WorksheetsWHS Chemistry Q2 Assessment 2019-2020
Total questions: 23
Worksheet time: 23mins
What is the chemical formula for disulfur decafluoride?
S10F2
S3F2
S2F10
S2F8
Which chemical formula represents magnesium phosphate?
MgPO4
Mg2PO4
Mg3(PO4)2
Mg2(PO4)3
What compound has the chemical formula MgI2
di-iodide magnesium
iodide (II) magnesium
magnesium iodide
magnesium (I) iodine (II)
Which statement best describes the atoms of elements that form compounds by covalent bonding?
They share electrons between them.
They have a large difference in atomic mass
They are in the same period in the periodic table
They have a large difference in valence electron number.
Which of the following elements is classified as a metal?
bromine
helium
sulfur
lithium
Which of the following atoms has the largest atomic radius
barium (Ba)
chlorine (Cl)
iodine (I)
magnesium (Mg)
Which of the following atoms has six valence electrons?
magnesium (Mg)
silicon (Si)
sulfur (S)
argon (Ar)
When cations and anions join, they form what kind of chemical bond?
ionic
hydrogen
metallic
covalent
Sodium has an atomic number of 11 and has a net charge of 0. When sodium combines with chlorine, it has a net charge of +1. Why?
Sodium loses a negative electron when forming chemical bonds.
Sodium gains a + proton when forming chemical bonds.
Sodium loses a + proton when forming chemical bonds.
Sodium shares a negative electron with chlorine.
Which of the following are exchanged or shared during the formation of a chemical bond.
Orbitals
Sublevels
Valence electrons
subatomic particles
Aluminum (Al) has three electrons in its outer shell. Oxygen (O) needs two electrons to complete its outer shell. What is the chemical formula for aluminum oxide?
AlO
Al2O
AlO2
Al2O3
Which of the following sections of the periodic table contains only metals?
group 2
group 18
period 2
period 6
How many electrons are in the outermost energy level of a neutral carbon atom?
2
4
6
8
Leroy combines magnesium (Mg) and fluorine (F). Based on the periodic table, which statement describes the interaction of these two elements?
Mg is a metal and F is a nonmetal that forms an ionic bond.
Mg is a nonmetal and F is a metal that forms an ionic bond.
Mg is a metal and F is a metal that forms a covalent bond.
Mg is a metalloid and F is a nonmetal that forms a covalent bond.
The correct formula for dinitrogen pentoxide is __________.
N2O5
N5O
NO5
N2O
What is the name of the compound with the formula PCl5?
Phosphorus (I) chloride
Phosphorus (V) chlorine
Phosphorus pentachorate
Phosphorus pentachloride
What is the correct name and bond represented by the formula NO2?
nitrogen dioxide: covalent bond
dinitrogen monoxide: ionic bond
nitrogen oxide: covalent bond
mononitrogen dioxide: ionic bond
What element will form covalent bonds with chlorine?
carbon
aluminum
magnesium
potassium
What is the chemical formula for chromium (III) oxide?
CrO
CrO2
Cr2O3
Cr3O2
How is copper (Cu) classified based on its location on the periodic table?
a nonmetal
an alkaline metal
a transition metal
an alkali metal
What is the name of the compound with the chemical formula CoF2?
fluorocobalt
cobalt trifluoride
cobalt (III) fluoride
fluorine (III) cobalt
Which three elements are arranged according to increasing electronegativity values?
N, C, B
N, P, As
N, O, F
F, O, N
Which group of elements is arranged in order of increasing atomic radii?
O, S, Se, Te
Fe, Ni, Ag, Au
Rb, K, Na, Li
Y, Zr, Nb, Mo
