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WorksheetsChemical Quantities Test
Total questions: 30
Worksheet time: 54mins
The mass of a mole of NaCl is the ____.
atomic mass
molar mass
gram atomic mass
molecular mass
What is the definition of a mole in chemistry?
A small burrowing mammal
A unit representing 6.02 × 10²³ particles
The mass of an element in grams
The volume of a gas at standard conditions
For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?
moles of any substance to number of particles
volume of gas (STP) to moles
density of gas (STP) to molar mass
mass of any substance to moles
What determines that an element is a metal?
when it is a Group A element
its position in the periodic table
the magnitude of its charge
the molecules that it forms
What SI unit is used to measure the number of representative particles in a substance?
mole
kilogram
ampere
kelvin
The molar mass of a substance can be calculated from its density alone, if that substance is a(n) ____.
element
liquid
gas at STP
solid
An -ate or -ite at the end of a compound name usually indicates that the compound contains ____.
only two elements
fewer electrons than protons
a polyatomic anion
neutral molecules
What type of ions have names ending in -ide?
only metal ions
only gaseous ions
only anions
only cations
Avogadro's number of representative particles is equal to one ____.
kilogram
mole
kelvin
gram
Which of the following is NOT a true about atomic mass?
The atomic mass is found by checking the periodic table.
The atomic mass is the number of grams of an element that is numerically equal to the mass in amu.
The atomic mass is the mass of one mole of atoms.
The atomic mass is 12 g for magnesium.
Which of the following is NOT a representative particle?
cation
anion
atom
all of the above
Which of the following is NOT a cation?
iron(III) ion
mercurous ion
sulfate
Ca²⁺
The molar volume of a gas at STP occupies ____.
22.4 L
0°C
12 grams
1 kilopascal
The molar mass of a gas can be determined from which of the following?
the density of the gas at STP
Its mass and volume at known conditions
Avogadro's number
none of the above
Which of the following elements is a halogen?
oxygen
fluorine
argon
neon
What is the charge of an electron?
variable
positive
negative
neutral
Which of the following is a noble gas?
oxygen
nitrogen
hydrogen
helium
Which of the following elements is an alkali metal?
aluminum
lithium
argon
calcium
What is the charge of a proton?
negative
neutral
positive
variable
Which of the following is a transition metal?
carbon
iron
helium
chlorine
Which of the following elements is a lanthanide?
carbon
iron
cerium
neon
Which of the following is a property of noble gases?
metallic luster
low boiling points
high reactivity
high density
What is the molar mass of a substance?
The mass of one molecule in grams
The mass of one mole of the substance in grams
The number of atoms in a mole
The volume occupied by one mole of a gas
Which of the following best describes the mole concept?
It relates mass, particles, and volume in chemistry
It only applies to gases
It is used only for measuring liquids
It is a unit of mass
The mole allows chemists to:
Count particles by weighing them
Measure temperature changes
Determine the speed of molecules
Predict colors of compounds
What is Avogadro’s number?
1.00 × 10³
3.14 × 10⁶
6.02 × 10²³
9.81 × 10²
Which of the following can be counted in moles?
Atoms
Molecules
Ions
All of the above
The mole is a unit used to measure:
Mass
Volume
Amount of substance
Temperature
How many atoms are in one mole of carbon?
6.02 × 10²³
12.01
1.00 × 10⁶
3.011 × 10²³
