V 2.0M 2023 Semester 1 Chem Final (12/20/2023) (12/21/2023)

Last updated 11 months ago

22 questions

Note from the author:

Instructions

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Library

V 2.0M 2023 Semester 1 Chem Final (12/20/2023) (12/21/2023)

Last updated 11 months ago

22 questions

Note from the author:

You may use your notes/work papers to complete the final. NO PHONES OR INTERNET.

Instructions

You may use your notes/work papers to complete the final. NO PHONES OR INTERNET.

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All the elements in each column on the periodic table have the same number of __________, making their __________ properties very similar.

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Using the periodic table as a model, students are asked to complete a graphic organizer that could be used to predict the charges of stable ions formed from atoms in a group on the periodic table.
Atoms are __________ because they have the same number of protons and electrons. However, based on valence electrons, some atoms will easily gain or lose electrons to other atoms in order to achieve noble gas electronic structure. __________are atoms that have gained or lost electrons.  Atoms that have __________ electrons have a positive charge and are called __________.  Atoms that have __________ electrons have a negative charge and are called __________.
.

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Elements in group 13 of the periodic table form ions with a charge of _______ [Make sure you use a + or - with the numerical value]

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You may use your notes/work papers to complete the final. NO PHONES OR INTERNET.

You may use your notes/work papers to complete the final. NO PHONES OR INTERNET.

A user is constructing an ionic bond between magnesium and fluorine and has reached the stage below. What should the user do next? [Take time to study the picture before you answer]

Add another magnesium atom.

Transfer an electron from the magnesium atom to the fluorine atom.

Add another fluorine atom.

Transfer an electron from the fluorine atom to the magnesium atom.

Lithium nitride has the chemical formula Li3N. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?

RbN

RbN3

Rb3N

Rb2N3

How many protons and neutrons does iron-56 have?

26 protons and 26 neutrons

26 protons and 30 neutrons

26 protons and 56 neutrons

30 protons and 56 neutrons

A and B are isotopes of the same element.

Only atom B is an isotope.

A and B are isotopes of different elements.

The two atoms have the same mass.

The diagram of an atom above shows two regions, the nucleus (1) and the area surrounding the nucleus (2). How are the protons, neutrons, and electrons that make up an atom distributed?

Protons in region 1, neutrons and electrons orbiting in region 2

Protons and neutrons in region 1, electrons orbiting in region 2

Electrons and neutrons in region 1, protons orbiting in region 2

Protons and electrons in region 1, neutrons orbiting in region 2

The diagram shows a simplified version of the periodic table along with two arrows indicating down and across (left to right).
What trend is there in atomic radius from element to element moving down and across the periodic table as indicated by the arrows?

Down = decreases, Across = increases

Down = decreases, Across = decreases

Down = increases, Across = decreases

Down = increases, Across = increases

All the elements in each column on the periodic table have the same number of __________, making their __________ properties very similar.

The diagram above represents the formation of lithium oxide from its elements. Which of the following statements provides the best explanation of the chemical reaction?

Two atoms of lithium each donate one electron to oxygen, forming two positively charged lithium ions and one negatively charged oxygen ion that are attracted to one another, forming a covalent bond.

Two atoms of lithium and one atom of oxygen share electrons, forming an ionic bond.

Two atoms of lithium and one atom of oxygen share electrons, forming a covalent bond.

Two atoms of lithium each donate one electron to oxygen, forming two positively charged lithium ions and one negatively charged oxygen ion that are attracted to one another, forming an ionic bond.

Using the periodic table as a model, students are asked to complete a graphic organizer that could be used to predict the charges of stable ions formed from atoms in a group on the periodic table.
Atoms are __________ because they have the same number of protons and electrons. However, based on valence electrons, some atoms will easily gain or lose electrons to other atoms in order to achieve noble gas electronic structure. __________are atoms that have gained or lost electrons.  Atoms that have __________ electrons have a positive charge and are called __________.  Atoms that have __________ electrons have a negative charge and are called __________.
.

A portion of the periodic table is shown below. Which column of elements would be most likely to chemically combine with potassium in a 1:1 ratio?

None of these groups would combine with potassium in a 1:1 ratio

Nitrogen, Phosphorus, Arsenic group

Fluorine, Chlorine, Bromine group

Oxygen, Sulfur, Selenium group

Select the best statement to describe the phenomenon of light emission from an excited hydrogen atom. (There may be more than one correct statement, but choose the "fullest" correct statement)

When electrons release light from an excited hydrogen atom, it can be of any wavelength, even more than the four shown in the model.

As the electrons absorb energy, they release light.

When the electrons return to ground state, they release light of varying wavelengths, depending upon which energy shell they are returning from.

When electrons absorb energy, they release light of varying wavelengths, depending upon which energy shell they are going to.

Based on the Lewis dot structures above, which two elements are expected to be located in the same group on the periodic table?

A and R

A and Z

R and X

X and Z

Elements in group 13 of the periodic table form ions with a charge of _______ [Make sure you use a + or - with the numerical value]

What type of bond will these elements form?

Metallic

Ionic

Covalent

What type of bond will these elements form?

Covalent

Ionic

Metallic

Of the elements shown in the portion of the periodic table, which element is the most electronegative (has the highest electronegativity)?

N - Nitrogen

As - Arsenic

Br - Bromine

F - Fluorine

The image shows Force of Attraction values for four scenarios. Select the best description of the trend shown.

The force of attraction decreases as the number of protons increases

The force of attraction increases as the number of protons decreases

The force of attraction increases as the distance increases

The force of attraction increases as the number of protons increases.

Which statement best describes the relationship between distance and force of attraction.

As the distance between the oppositely charged particles increases, the force of attraction increases.

As the distance between the oppositely charged particles increases, the force of attraction decreases.

As the number of positive particles increases, the force of attraction decreases.

The shorter the distance between oppositely charged particles, the weaker the force of attraction is.

Choose the correct name for this molecule: CCl4

monochlorocarbon

carbon tetrachloride

carbon chloride

tetracarbon chloride

Which of the following would be the best formula for nickel (III) bromide?

Ni2Br6

NiBr3

Ni3Br

Ni3Br3

How many valence electrons are in the atom shown in the image above?

4

0

8

2

What does the number of dots in a Lewis Dot structure indicate about the atom?

number of valence electrons

number of electrons

number of neutrons

number of protons

A user is constructing an ionic bond between magnesium and fluorine and has reached the stage below. What should the user do next? [Take time to study the picture before you answer]

Add another magnesium atom.

Transfer an electron from the magnesium atom to the fluorine atom.

Add another fluorine atom.

Transfer an electron from the fluorine atom to the magnesium atom.

Lithium nitride has the chemical formula Li3N. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?

RbN

RbN3

Rb3N

Rb2N3

How many protons and neutrons does iron-56 have?

26 protons and 26 neutrons

26 protons and 30 neutrons

26 protons and 56 neutrons

30 protons and 56 neutrons

A and B are isotopes of the same element.

Only atom B is an isotope.

A and B are isotopes of different elements.

The two atoms have the same mass.

The diagram of an atom above shows two regions, the nucleus (1) and the area surrounding the nucleus (2). How are the protons, neutrons, and electrons that make up an atom distributed?

Protons in region 1, neutrons and electrons orbiting in region 2

Protons and neutrons in region 1, electrons orbiting in region 2

Electrons and neutrons in region 1, protons orbiting in region 2

Protons and electrons in region 1, neutrons orbiting in region 2

The diagram shows a simplified version of the periodic table along with two arrows indicating down and across (left to right).
What trend is there in atomic radius from element to element moving down and across the periodic table as indicated by the arrows? 

Down = decreases, Across = increases

Down = decreases, Across = decreases

Down = increases, Across = decreases

Down = increases, Across = increases

The diagram above represents the formation of lithium oxide from its elements. Which of the following statements provides the best explanation of the chemical reaction?

Two atoms of lithium each donate one electron to oxygen, forming two positively charged lithium ions and one negatively charged oxygen ion that are attracted to one another, forming a covalent bond.

Two atoms of lithium and one atom of oxygen share electrons, forming an ionic bond.

Two atoms of lithium and one atom of oxygen share electrons, forming a covalent bond.

Two atoms of lithium each donate one electron to oxygen, forming two positively charged lithium ions and one negatively charged oxygen ion that are attracted to one another, forming an ionic bond.

A portion of the periodic table is shown below. Which column of elements would be most likely to chemically combine with potassium in a 1:1 ratio?

None of these groups would combine with potassium in a 1:1 ratio

Nitrogen, Phosphorus, Arsenic group

Fluorine, Chlorine, Bromine group

Oxygen, Sulfur, Selenium group

Select the best statement to describe the phenomenon of light emission from an excited hydrogen atom. (There may be more than one correct statement, but choose the "fullest" correct statement)

When electrons release light from an excited hydrogen atom, it can be of any wavelength, even more than the four shown in the model.

As the electrons absorb energy, they release light.

When the electrons return to ground state, they release light of varying wavelengths, depending upon which energy shell they are returning from.

When electrons absorb energy, they release light of varying wavelengths, depending upon which energy shell they are going to.

Based on the Lewis dot structures above, which two elements are expected to be located in the same group on the periodic table?

A and R

A and Z

R and X

X and Z

What type of bond will these elements form?

Metallic

Ionic

Covalent

What type of bond will these elements form?

Covalent

Ionic

Metallic

Of the elements shown in the portion of the periodic table, which element is the most electronegative (has the highest electronegativity)?

N - Nitrogen

As - Arsenic

Br - Bromine

F - Fluorine

The image shows Force of Attraction values for four scenarios. Select the best description of the trend shown.

The force of attraction decreases as the number of protons increases

The force of attraction increases as the number of protons decreases

The force of attraction increases as the distance increases

The force of attraction increases as the number of protons increases.

Which statement best describes the relationship between distance and force of attraction.

As the distance between the oppositely charged particles increases, the force of attraction increases.

As the distance between the oppositely charged particles increases, the force of attraction decreases.

As the number of positive particles increases, the force of attraction decreases.

The shorter the distance between oppositely charged particles, the weaker the force of attraction is.

Choose the correct name for this molecule:  CCl4

monochlorocarbon

carbon tetrachloride

carbon chloride

tetracarbon chloride

Which of the following would be the best formula for nickel (III) bromide?

Ni2Br6

NiBr3

Ni3Br

Ni3Br3

How many valence electrons are in the atom shown in the image above?

4

0

8

2

What does the number of dots in a Lewis Dot structure indicate about the atom?

number of valence electrons

number of electrons

number of neutrons

number of protons

V 2.0M 2023 Semester 1 Chem Final (12/20/2023) (12/21/2023)

V 2.0M 2023 Semester 1 Chem Final (12/20/2023) (12/21/2023)

A user is constructing an ionic bond between magnesium and fluorine and has reached the stage below. What should the user do next? [Take time to study the picture before you answer]

Lithium nitride has the chemical formula Li3N. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?

How many protons and neutrons does iron-56 have?

The diagram of an atom above shows two regions, the nucleus (1) and the area surrounding the nucleus (2). How are the protons, neutrons, and electrons that make up an atom distributed?

The diagram shows a simplified version of the periodic table along with two arrows indicating down and across (left to right).What trend is there in atomic radius from element to element moving down and across the periodic table as indicated by the arrows?

The diagram above represents the formation of lithium oxide from its elements. Which of the following statements provides the best explanation of the chemical reaction?

A portion of the periodic table is shown below. Which column of elements would be most likely to chemically combine with potassium in a 1:1 ratio?

Select the best statement to describe the phenomenon of light emission from an excited hydrogen atom. (There may be more than one correct statement, but choose the "fullest" correct statement)

Based on the Lewis dot structures above, which two elements are expected to be located in the same group on the periodic table?

What type of bond will these elements form?

What type of bond will these elements form?

Of the elements shown in the portion of the periodic table, which element is the most electronegative (has the highest electronegativity)?

The image shows Force of Attraction values for four scenarios. Select the best description of the trend shown.

Which statement best describes the relationship between distance and force of attraction.

Choose the correct name for this molecule: CCl4

Which of the following would be the best formula for nickel (III) bromide?

How many valence electrons are in the atom shown in the image above?

What does the number of dots in a Lewis Dot structure indicate about the atom?

The diagram shows a simplified version of the periodic table along with two arrows indicating down and across (left to right).
What trend is there in atomic radius from element to element moving down and across the periodic table as indicated by the arrows?