WorksheetsChemistry Semester 1 Review
Total questions: 40
Worksheet time: 1hrs 20mins
Which element has the largest atomic radius?
B
Al
Ca
Mg
What is the formal charge of Cl?
0
+1
-1
-2
A vertical column of blocks in the periodic table is called a(n)
group.
period.
course.
octet.
A horizontal row of blocks in the periodic table is called a(n)
group.
period.
family.
octet.
A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called
electron affinity.
electron configuration.
electronegativity.
ionization potential.
What type of decay changes the atomic number of the atom?
Transmutation
Translation
Translocation
Transuranium
How many protons, electrons, and neutrons does an atom with atomic number 50 and mass
number 125 contain?
50 protons, 50 electrons, 75 neutrons
75 electrons, 50 protons, 50 neutrons
120 neutrons, 50 protons, 75 electrons
70 neutrons, 75 protons, 50 electrons
Which statement describes the general trends in electronegativity and atomic radius as the elements in Period 2 are considered in order from left to right?
Both electronegativity and atomic radius increase.
Both electronegativity and atomic radius decreases.
Electronegativity increases and atomic radius decreases.
Electronegativity decreases and atomic radius increases.
Identify which of the following atoms has the largest atomic radius?
barium (Ba)
chlorine (Cl)
iodine (I)
magnesium (Mg)
What is anything that takes up space and has mass?
matter
Mass
volume
energy
What is it called when a solid changes state directly into a gas?
evaporation
melting
sublimation
condensation
The stability of isotopes is related to the ratio of which particles in the atoms?
electrons and protons
electrons and positrons
neutrons and protons
neutrons and positrons
Identify the list of elements is arranged in order of increasing electronegativity:
Be, Mg, Ca
K, Ca, Sc
F, Cl, Br
Li, Na, K
A 2-cm-thick piece of cardboard placed over a radiation source would be most effective in protecting against which type of radiation?
Alpha
Beta
Gamma
x-ray
All atoms want to have
equal #'s of protons and electrons.
large amounts of protons.
full outermost energy levels.
a small mass.
Each element is defined by the number of
Atoms
Isotopes
Neutrons
Protons
Identify the total number of electrons, Al+3
13
17
10
3
Identify the total number of electrons for each, Mg-2
12
14
10
22
What is at the center of every atom?
An electron
A compound
A molecule
A nucleus
Electrons can be found in
The protons
The nucleus
Electron Clouds
The neutrons
Electrons are not factored into atomic mass because
They are so small their mass is negligible
They're not in the nucleus
They're too big
They move so quickly their mass is zero
Which of the following statements is true for a 14C?
it has 6 protons and 6 neutrons
it has 12 protons and 12 neutrons
it has 12 protons and 8 neutrons
it has 6 protons and 8 neutrons
Atoms gain or lose electrons to form ions. Determine the number of electrons in the ion K+1
18
19
20
39
What is the charge on the calcium ion?
+1
+2
Sometimes +1, sometimes +2
-2
How many neutrons does the following particle have? 5224Cr6+
52
24
6
28
Which has greater electronegativity between Sodium and Bromine?
Sodium is greater to its location on the periodic table being on the left.
Bromine is greater to its location on the periodic table being on the right.
Sodium is greater to its location on the periodic table being on the bottom.
Bromine is greater to its location on the periodic table being on the top.
A column on the periodic table is called
period
group
family
both b and c
Which of the following ordered pairs of elements shows an increase in atomic number but a decrease in average atomic mass?
Ag to Pd
Co to Ni
Ge to Sn
Cr to Mo
Generally, how do atomic masses vary throughout the periodic table of the elements?
They increase from left to right and top to bottom.
They increase from left to right and bottom to top.
They increase from right to left and top to bottom.
They increase from right to left and bottom to top.
