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WorksheetsSemester 1 Mid Exam Honors
Total questions: 78
Worksheet time: 14mins
Which of the following is an extensive property of matter?
melting point
volume
boiling point
density
Which of the following is an intensive physical property of matter?
mass
color
volume
length
How many significant digits are in 4506890000
4
5
6
10
How many individual atoms are in one formula unit of CuCl2?
1
2
3
4
How many atoms Fluorine are in one molecule of CF4?
1
2
3
4
Which term describes the amount of matter in an object?
mass
volume
length
density
An atom is
the smallest unit of matter that maintains its chemical identity
the smallest unit of a compound.
always made of carbon.
smaller than an electron.
Which of the following is not a physical change?
burning
boiling
cutting
grinding
A chemical change occurs when
runny eggs become hard when cooked..
salt deposits form from evaporated seawater.
dissolved minerals solidify to form a crystal.
ethanol is purified through evaporation and condensation in distillation.
A state of matter in which a material has no definite shape but has a definite volume is the ____ state.
gas
solid
liquid
plasma
The liquid state of matter can be described as
having a definite volume but not a definite shape.
having lost electrons lowering the energy content.
having neither a definite shape nor a definite volume.
having definite shape and definite volume.
A mixture is
any group of elements that are chemically bonded to one another.
a blend of any two or more kinds of matter, as long as each maintains its own unique properties.
any substance with a uniform composition
a combination of pure substances bonded chemically.
If a mixture is uniform in composition, it is said to be
homogeneous.
a compound.
heterogeneous.
element
A homogeneous mixture is also called
a solute.
a compound
a solution.
chemically bonded.
Which of the following is an example of a homogeneous mixture?
a pizza
orange juice with pulp
oil & vinegar salad dressing
air
The vertical columns on the periodic table are called
periods
groups
rows
elements
The horizontal rows on the periodic table are called
actinides
groups.
families.
periods.
Which is a chemical property of copper?
has boiling point of 2456 C
reacts in air to form a green layer
is brown colored solid
is a solid at room temperature
Which is a physical property of copper?
reacts with silver nitrate to form silver
reacts in air to form a green layer
reacts with water to form blue liquid
is a solid at room temperature
The only pure substance listed below is
seawater
vinegar (5% acetic acid & 95% water)
table salt (sodium chloride)
bread dough
Which of the measurements represent 3 significant figures?
0.890 g
0.089 g
890 g
8.900 g
When 58.00 is multiplied by 0.900, the correct number of significant digits the answer should be rounded is...
2
3
4
5
Isotopes are atoms of the same element that have different
atomic numbers.
numbers of protons.
numbers of neutrons
numbers of electrons.
The atomic number of oxygen, 8, indicates that there are eight
protons in the nucleus of an oxygen atom.
oxygen isotopes.
neutrons outside the oxygen atom's nucleus.
energy levels in the oxygen atom's nucleus.
The total number of protons and neutrons in the nucleus of an atom is its
atomic number.
Avogadro number.
average atomic mass.
mass number.
All atoms of the same element have the same
atomic mass.
number of neutrons.
mass number.
atomic number.
Chlorine has atomic number 17 and mass number 35. It has
17 protons, 17 electrons, and 18 neutrons.
35 protons, 35 electrons, and 17 neutrons.
17 protons, 17 electrons, and 52 neutrons.
18 protons, 18 electrons, and 17 neutrons.
An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is
13
14
27
40
A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)
nuclide
neutron
electron
isotope
The emission of electrons from metals that have absorbed photons is called the
photoelectric effect.
quantum effect.
interference effect.
dual effect.
An atom is electrically neutral because
the numbers of protons and neutrons are equal.
the numbers of protons and electrons are equal.
nuclear forces stabilize the charges.
neutrons balance the protons and electrons.
A quantum of electromagnetic energy is called a(n)
photon
electron
orbital
excited atom
The principle quantum number, n, best describes which of the following characteristics
shape of electron cloud
size of the energy cloud
spin of the electron
intensity of charge of the electron cloud
According to Pauli's exclusion principle, no two electrons in the same atom can have the same________.
same set of four quantum numbers
average distance from the nucleus.
orbital location
spin
Which of the following quantum numbers indicates the orbitals orientation in space?
n
l
m
s
The element with electron configuration 1s2 2s2 2p6 3s2 3p2 is
Mg (Z = 12).
S (Z = 16).
C (Z = 6).
Si (Z = 14)
Which of the following rules requires that each of the p orbitals at a particular energy level receive one electron before any of them can have two electrons?
Hund's rule
the Pauli exclusion principle
uncertainty principle
the quantum rule
What is the Pauli Exclusion Principle?
An atomic orbital can only hold a maximum of 2 electrons, each with opposite spins
An atomic orbital can hold a minimum of 6 electrons, each with opposite spins
An atomic orbital can hold a minimum of 2 electrons, each with opposite spins
An atomic orbital can hold a maximum of 6 electrons, each with the same spin
Which of the following is an example of matter that is pure?
suspension
compound
true solution
colloid
Classify this research question: Which state receives more precipitation, Maine or Florida?
compare
correlate
time-series
not a statistical question
Which is a quantitative measurement?
taste
temperature
color
hardness
The diagram represents a _____.
pure substance that is a compound
mixture of elements
pure substance that is an element
a mixture of compounds
The diagram represents a _____.
pure substance that is a compound
mixture of elements
pure substance that is an element
a mixture of compounds
How is the measurement 0.000 0650 cm written in scientific notation?
6.5 X 10–4 cm
65 X 10–6 cm
6.50 X 10–5cm
6.5 X 10–5 cm
The density of pure diamond is 3.5 g/cm3. What is the volume of a diamond with a mass of 0.25 g?
0.071 cm3
0.875 cm3
3.75 cm3
14 cm3
What is the molar mass of calcium hydroxide, Ca(OH)2?
74.1 g/mole
57.1 g/mole
58.1 g/mole
57.1 u
Which has more molecules?
1 mole Al(OH)3
1 mole CrCl3
1 mole O2
They are all the same
Which of the following would have more mass?
1 mole of Li
1 mole of Si
1 mole of Au
None, all are equal
Which of the following would have more mass?
1 mole Pb
1 mole of Rn
1 mole of Mg
none of these choices
How many protons in the element pictured?
35
80
45
115
How many electrons in the element pictured?
35
80
45
115
How many neutrons in the element pictured?
35
80
45
115
An atom becomes anion by
gaining electrons
losing electrons
gaining a proton
losing a proton
The creator of the periodic table noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing
atomic number
reactivity
atomic mass
valence electrons
What are the elements with atomic numbers from 57 to 71 called?
lanthanide
actinide
Group 3- transitions metals
alkali metals
In which, of the following pairs, is the second particle listed larger than the first?
Br, Br-1
Li,Li+1
Pb, C
K, Ga
The periodic law states that the physical and chemical properties of elements are periodic functions of their increasing atomic
masses.
numbers
radii
charges
The periodic law allows some properties of an element to be predicted based on its
position in the periodic table.
element
valence electrons
number of isotopes
Elements to the right side of the periodic table (p-block elements) have properties most associated with
nonmetals
gases
metalloids
metals
Elements in which the d-sublevel is being filled have the properties of
metals
nonmetals
solids
metalloids
To which block do the actinide elements belong?
d
f
p
s
The energy required to remove an electron from an atom is the atom's
electron affinity
ionization
electronegativity
atomic radii
In a row in the periodic table, as the atomic number increases, the atomic radius generally
increase
decrease
stay the same
do not change
How does the energy required to remove an electron from an atom change as you move left to right in Period 4 from potassium through iron?
increase
decrease
stay the same
do not change
A measure of the ability of an atom in a chemical compound to attract electrons from another atom when bonded is called
electron affinity
ionization potential
electronegativity
electron configuration
What is removed when the ionization energy is supplied to an atom of an element?
electron
electron cloud
the nucleus
an ion
The number of valence electrons in Group 13 elements is
1
2
3
equal to the row they are in
One-half the distance between the nuclei of identical adjacent atoms that are bonded together is called the
atomic radius
atomic diameter
atomic volume
electron cloud
How does the electronegativity of an element change as you move left to right in Period 5 from Rb through Ru?
generally increases
generally decreases
stays the same
varies unpredictibly
What is the molar mass of Calcium Hydroxide, Ca(OH)₂?
57.1 g/mol
74.1 g/mol
58.1 g/mol
72.1 g/mol
How many atoms are in 14 moles of Cadmium (Cd)? (Avogadro's Number ≈ 6.02 x 10²³ particles/mol)
8.4 x 1024 atoms
1.4 x 10²³ atoms
2.3 x 1024 atoms
8.4 x 10²³ atoms
What mass (in grams) contains 1.2 x 10²⁴ atoms of Carbon (C)?
2.0 g
12.0 g
0.24 g
24.0 g
Which of the following is a chemical property of iron?
rusts when exposed to moisture
has a silvery-gray color
is solid at room temperature
is magnetic
What is the atomic number of an atom with 17 protons?
34
18
17
16
Which state of matter has both a definite shape and a definite volume?
liquid
gas
plasma
solid
The element chlorine has two naturally occurring isotopes: Cl-35 (75.77% abundance, mass = 34.969 amu) and Cl-37 (24.23% abundance, mass = 36.966 amu). What is the weighted average atomic mass of chlorine?
35.00 amu
36.00 amu
37.00 amu
35.45 amu
Which of the following best describes how to calculate the weighted average atomic mass of an element?
Use the mass of the most abundant isotope only
Multiply each isotope's mass by its percent abundance, sum the results
Subtract the smallest isotope mass from the largest
Add the masses of all isotopes and divide by the number of isotopes
An element has two isotopes: 60% of isotope A with a mass of 10 amu and 40% of isotope B with a mass of 12 amu. What is the weighted average atomic mass?
11.2 amu
10.8 amu
12.0 amu
11.6 amu
