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WorksheetsFall Final Exam
Total questions: 45
Worksheet time: 30mins
An atom's electron configuration ends with 3p2, what element is it?
sulfur
silicon
Germanium
carbon
An atom's electron configuration is 1s2,2s2, 2p4 what element is it?
sulfur
nitrogen
oxygen
fluorine
An atom's electron configuration is 1s2,2s2, 2p6, 3s2, 3p3 how many electrons does the element have?
11 electrons
5 electrons
26 electrons
15 electrons
What are the three types of elements on the periodic table?
Metalloids, nonmetals, and Alkali metals
Metals, Metalloids, and Gases
Metals, Metalloids and Nonmetals
Metals, Halogens and Gases
Why does Coulombic Attraction increase across a period?
distance increases between nucleus and valence electrons
the amount of protons increase
the amount of electrons increases
Amount of charges increases and distance does not increase
What happens to coulombic attraction down a group?
increases
decreases
stays the same
Down a group ionization decreases because coulombic attraction decreases, why?
distance between the electrons and protons increase
amount of protons and electrons increases
distance between the electrons and protons decrease
amount of protons and electrons decreases
What are the subatomic particles?
protons
electrons
neutrons
alpha particles
beta particles
The modern atomic model has an electrons cloud, what does that mean ?
protons are in the nucleus
electrons rotate in orbits around the nucleus
neutrons are in an area called the cloud
electrons are outside the nucleus in random areas
Due to Rutherford's experiment in which the alpha particle scattering showed definite patterns about the atom. What part of the atom was discovered?
proton
neutrons
electrons
nucleus
Which of the following part/s of Dalton's postulates about the atom, still remain as part/s of the modern atomic theory.
Atoms are indivisible and indestructible
Atoms combine in simple whole number ratios to form compounds
Atoms of different elements contain different masses
all matter is made up of small particles called atoms
All atoms of a particular element share identical properties, including weight
What did Bohr's model have that other models did not?
nucleus
neutrons
protons
electrons
energy levels
What are the characteristics of the plum pudding model (discovered by the cathode ray experiment)?
an atom has a positively charged space with negatively charged electrons inside the space
electrons make up an atom
protons make up an atom and are scattered randomly in the atom
neutrons are everywhere in the atom
What makes an element an ion?
more protons than electrons
more electrons than neutrons
more protons than neutrons
more electrons than protons
What are the characteristics of an atom that has a negative charge.
more protons than electrons
more electrons than protons
more protons than neutrons
more electrons than neutrons
What are the characteristics of a neutral atom?
same amount of protons and electrons
more electrons than protons
same amount of protons and neutrons
same amount of electrons and neutrons
What are the characteristics of an atom that has a positive charge.
more protons than electrons
more electrons than protons
more protons than neutrons
more electrons than neutrons
How many electrons are in a s subshell in any given sblock?
1
2
6
8
How many electrons are in a p subshell in any given p block?
1
2
6
8
What are the differences in nuclear reactions and electron bonded reactions (ionic & covalent bonding)?
amount of energy released
changes in the identity of the elements
valence electrons are involved only in 1 type
products are made in nuclear reactions only
What conditions make a oxidation and reduction reaction (redox)?
the # of particles in the nucleus changes
electrons are shared between atoms
electrons are transferred from 1 atom to another
an oxygen has to be in the reaction
the oxidation state of 2 atoms changes
What conditions make an inorganic and organic combustion reaction?
the # of particles in the nucleus changes
electrons are shared between atoms
electrons are transferred from 1 atom to another
an oxygen has to be a reactant
the oxidation state of 2 atoms changes
Which of the following patterns describe a synthesis reaction?
AB + DC --> AC + DB
AB --> A + B
A + B --> AB
A + BC --> AC + B
Which of the following patterns describe a double replacement reaction?
AB + DC --> AC + DB
AB --> A + B
A + B --> AB
A + BC --> AC + B
Which of the following patterns describe a single replacement reaction?
AB + DC --> AC + DB
AB --> A + B
A + B --> AB
A + BC --> AC + B
Which of the following patterns describe a decomposition reaction?
AB + DC --> AC + DB
AB --> A + B
A + B --> AB
A + BC --> AC + B
Ga2(SO4)3 + 3Cl2 →
How many atoms should there be on the product side of the equation?
6
21
15
23
Ga2(SO4)3 + 3Cl2 →
How many atoms of oxygen should there be on the product side of the equation?
6
7
12
23
4H2O -->
How many oxygen and how many hydrogen will be on the product side of the reaction.
2 Hydrogen and 1 oxygen
8 Hydrogen and 1 oxygen
2 Hydrogen and 4 oxygen
8 Hydrogen and 4 oxygen
What is the formula for iron (III) sulfide?
FeS
Fe3O2
Fe2O3
Fe3O3
What is the formula for Scandium (III) nitride?
ScN
Sc3N3
Sc2N3
Sc3N2
What is the formula for Magnesium nitride?
MgN
Mg3N3
Mg2N3
Mg3N2
Which of the polyatomic ions will bond with only 1 lithium atom (Li)
OH1-
NO21−
SO42-
NO33-
NO43-
Which characteristics that describe the formation of an ionic bond?
sharing of electrons
transfer of electrons between an atom that loses and an atom that gains electrons
bonding between atoms of similar electronegativities
bonding between a metal and a nonmetal
bonding between 2 nonmetals
A scientist experimentally reacts 32g of Na with an excess of oxygen gas.
Na + O2 --> Na2O
How many grams of Sodium oxide will theoretically be produced?
173g Na2O
43g Na2O
23g Na2O
6g Na2O
How many moles are in 6.02 x 1023 atoms
1 mole
2 moles
half of a mole
6 moles
What is converted when grams of a substance is divided by it's molar mass?
grams to moles
grams to Avogadro's number of particles
grams to liters
grams to grams
Experimentally a scientist produces 13.5 moles of H2O what is the mass in grams of the H2O?
2H2 + O2 --> 2H2O
18 grams H2O
243 grams H2O
36 grams H2O
486 grams H2O
Which reaction is correctly balanced ?
A) Be + O2 --> BeO2
B) 2Be + O2 --> 2BeO
A
B
both are balanced and obey the law of conservation of energy
In the model, which of the following statements is true?
the carbon has an incomplete octet
Each carbon has three lone pairs of electrons on it.
the carbon shares 4 electrons with each oxygen
the carbon has a double bond to each oxygen
From the model, which of the following statements is true?
the nitrogen has an incomplete octet
Each nitrogen has 1 lone pairs of electrons
the nitrogen has 1 nonbonded pair and 3 bonded pair of electrons
the nitrogen has a triple bond to each oxygen
In this Lewis Dot structure, how many valence electrons are on the model?
2
3
5
7
Mass # is ?
protons plus neutrons
protons plus electrons
electrons plus neutrons
neutrons plus ions
2 Na + Cl2 --> 2 NaCl
How many moles of each reactant?
2 moles of Na and 2 moles of Chlorine
2 moles of Na and 1 mole of Chlorine
4 moles in total
SiCl4 + O2 --> SiO2 + 2Cl2
If 5 moles of Oxygen were used with an excess of SiCl4, which of the following statements would be correct?(check all that apply)
2 moles of Cl2 would be produced
5 moles of SiO2 would be produced
10 moles of Cl2 would be produced
15 moles of product
1 mole or SiO2
