A)Which statement about metals and nonmetals is correct?(1 point)
Responses
Metals tend to be poor conductors of electricity, while nonmetals are strong conductors of electricity.
Metals tend to be poor conductors of electricity, while nonmetals are strong conductors of electricity.
Most metals are a solid under normal conditions, and most nonmetals are a liquid.
Most metals are a solid under normal conditions, and most nonmetals are a liquid.
Metals can be hammered into thin sheets, and nonmetals are brittle.
Metals can be hammered into thin sheets, and nonmetals are brittle.
Metals and nonmetals can both be found in any column of the periodic table.
Metals and nonmetals can both be found in any column of the periodic table.
Question 2
A)
Use the periodic table to answer the question.
Based on properties of elements in the periodic table, which element is the best conductor of thermal energy?
(1 point)
Responses
polonium (Po)
polonium (Po)
vanadium (V)
vanadium (V)
argon (Ar)
argon (Ar)
germanium (Ge)
germanium (Ge)
Question 3
A)
Use the periodic table to answer the question.
Which element has four valence electrons?
(1 point)
Responses
sulfur (S)
sulfur (S)
potassium (K)
potassium (K)
beryllium (Be)
beryllium (Be)
silicon (Si)
silicon (Si)
Question 4
A)Which statement best explains why hydrogen’s atomic number is equal to its mass?(1 point)
Responses
Hydrogen only has one electron.
Hydrogen only has one electron.
Hydrogen is stable, with two electrons in its outer shell.
Hydrogen is stable, with two electrons in its outer shell.
Hydrogen does not have any neutrons.
Hydrogen does not have any neutrons.
Hydrogen is in the first row and the first column of the periodic table.
Hydrogen is in the first row and the first column of the periodic table.
Question 5
A)
Use the periodic table to answer the question.
Which statement correctly compares the valence electrons for atoms of francium (Fr) and barium (Ba)?
(1 point)
Responses
Barium has fewer valence electrons, but they are in a higher energy level.
Barium has fewer valence electrons, but they are in a higher energy level.
Francium has more valence electrons, and they are in a higher energy level.
Francium has more valence electrons, and they are in a higher energy level.
Barium has more valence electrons, and they are in a higher energy level.
Barium has more valence electrons, and they are in a higher energy level.
Francium has fewer valence electrons, but they are in a higher energy level.
Francium has fewer valence electrons, but they are in a higher energy level.
Question 6
A)Gallium has an atomic number of 31 and a mass number of 70. Which table shows the number of protons, neutrons, and electrons in a gallium ion with a +3 charge?(1 point)
Responses
Particle Number
protons 39
neutrons
31
electrons 39
Particle Number protons 39 neutrons 31 electrons 39
Particle Number
protons 31
neutrons
39
electrons 31
Particle Number protons 31 neutrons 39 electrons 31
Particle Number
protons 31
neutrons
39
electrons 28
Particle Number protons 31 neutrons 39 electrons 28
Particle Number
protons 39
neutrons
31
electrons 36
Particle Number protons 39 neutrons 31 electrons 36
Question 7
A)Which is true about stable isotopes?(1 point)
Responses
A stable nucleus has a similar number of protons and neutrons.
A stable nucleus has a similar number of protons and neutrons.
Isotopes are always unstable because they are radioactive.
Isotopes are always unstable because they are radioactive.
Isotopes that are naturally occurring in nature are always unstable.
Isotopes that are naturally occurring in nature are always unstable.
Isotopes with more neutrons than protons are always stable.
Isotopes with more neutrons than protons are always stable.
Question 8
A)On which atomic property proposed by Henry Moseley is the current periodic table of the elements based?(1 point)
Responses
atomic weight
atomic weight
electric charge
electric charge
atomic number
atomic number
nucleus size
nucleus size
Question 9
A)Which incorrect aspect of Rutherford’s model was fixed by Bohr’s model?(1 point)
Responses
Electrons move freely in curved paths around the nucleus.
Electrons move freely in curved paths around the nucleus.
The nucleus contains most of the mass of an atom.
The nucleus contains most of the mass of an atom.
Atoms have small, dense, positively charged nuclei.
Atoms have small, dense, positively charged nuclei.
Positively charged nuclei repel positively charged alpha particles.
Positively charged nuclei repel positively charged alpha particles.
Question 10
A)You plan to pass alpha particles through a field that contains a consistent type of particle. Which configuration will result in the largest deflection of alpha particles? (1 point)
Responses
high-energy alpha particles passing through a field of low mass-number-particles
high-energy alpha particles passing through a field of low mass-number-particles
low-energy alpha particles passing through a field of low mass-number-particles
low-energy alpha particles passing through a field of low mass-number-particles
low-energy alpha particles passing through a field of high mass-number-particles
low-energy alpha particles passing through a field of high mass-number-particles
high-energy alpha particles passing through a field of high mass-number-particles
high-energy alpha particles passing through a field of high mass-number-particles
Question 11
A)Where on the periodic table do you find elements that have full valence electron shells?(1 point)
Responses
on the left side of the periodic table
on the left side of the periodic table
across the bottom of the periodic table
across the bottom of the periodic table
on the right side of the periodic table
on the right side of the periodic table
across the top of the periodic table
across the top of the periodic table
Question 12
A)Which element would have a full outer shell of electrons if it gained three electrons? (1 point)
Responses
boron
boron
argon
argon
lithium
lithium
nitrogen
nitrogen
Question 13
A)Which group of elements has the most similar chemical properties?(1 point)
Responses
fluorine, chlorine, and iodine
fluorine, chlorine, and iodine
carbon, nitrogen, and oxygen
carbon, nitrogen, and oxygen
uranium, plutonium, and lead
uranium, plutonium, and lead
aluminum, silicon, and phosphorus
aluminum, silicon, and phosphorus
Question 14
A)Why are the noble gases the least reactive elements? (1 point)
Responses
They have a full valence electron shell.
They have a full valence electron shell.
They have an empty inner electron shell.
They have an empty inner electron shell.
They are the most electronegative elements.
They are the most electronegative elements.
They are the elements with the smallest atomic mass.
They are the elements with the smallest atomic mass.
Question 15
A)Group 2 elements have two valence electrons. Which kind of bond will they most likely form, and why?(1 point)
Responses
An ionic bond is likely because they are metals and will want to bond with nonmetals.
An ionic bond is likely because they are metals and will want to bond with nonmetals.
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
A metallic bond is likely because they are metals and can bond with other metals.
A metallic bond is likely because they are metals and can bond with other metals.
A covalent bond is likely because they want to share those two valence electrons in order to become stable.
A covalent bond is likely because they want to share those two valence electrons in order to become stable.
Question 16
A)An element has six valence electrons. Which ionic charge will its ion carry?(1 point)
Responses
2+
2+
2–
2–
6+
6+
6–
6–
Question 17
A)Potassium’s atomic number is 19, and its atomic mass is approximately 39. How many neutrons does potassium have?(2 points)
Responses
19
19
58
58
39
39
20
20
Question 18
A)
Use the periodic table to answer the question.
How many valence electrons does each atom of arsenic (As) have? Arsenic is element 33. It is in period 4 and family 15 (5A or the Nitrogen family).
(3 points)
Responses
33
33
4
4
15
15
5
5
Question 19
A)Helium is in group 18 of the periodic table. How is helium different from the other elements in this group?(2 points)
Responses
Helium atoms have 2 electrons, while atoms of the other elements in the group all have 18 electrons.
Helium atoms have 2 electrons, while atoms of the other elements in the group all have 18 electrons.
Helium atoms have valence electrons in the first energy level, while atoms of the other elements in the group have valence electrons in the second energy level.
Helium atoms have valence electrons in the first energy level, while atoms of the other elements in the group have valence electrons in the second energy level.
Helium atoms have 2 valence electrons, while atoms of the other elements in the group all have 8 valence electrons.
Helium atoms have 2 valence electrons, while atoms of the other elements in the group all have 8 valence electrons.
Helium atoms have a full outer energy level, while atoms of the other elements in the group do not have a full outer energy level.
Helium atoms have a full outer energy level, while atoms of the other elements in the group do not have a full outer energy level.
Question 20
A)
Use the periodic table to answer the question.
Which statement best describes the arrangement of electrons in an atom of fluorine (F)?
(1 point)
Responses
There are five electrons in the first energy level and two electrons in the second energy level.
There are five electrons in the first energy level and two electrons in the second energy level.
There are two electrons in the first energy level and seven electrons in the second energy level.
There are two electrons in the first energy level and seven electrons in the second energy level.
There are seven electrons in the first energy level and two electrons in the second energy level.
There are seven electrons in the first energy level and two electrons in the second energy level.
There are two electrons in the first energy level and five electrons in the second energy level.
1 answer
Here are the correct responses for each of your questions:
Question 1:
Answer: Metals can be hammered into thin sheets, and nonmetals are brittle.
Question 2:
Answer: vanadium (V)
Question 3:
Answer: silicon (Si)
Question 4:
Answer: Hydrogen does not have any neutrons.
Question 5:
Answer: Francium has fewer valence electrons, but they are in a higher energy level.
1 answer