What happens when the compound NaCl is formed? 3.02

Sodium transfers an electron to chlorine.

Sodium receives two electrons from chlorine.

Sodium forms an ion with −1 charge and chlorine forms an ion with +1 charge.

Sodium forms an ion with +2 charge and chlorine forms an ion with −2 charge.

What happens when the compound HCl is formed? 3.02

Hydrogen forms an ion with +1 charge; chlorine forms an ion with −1 charge.

Hydrogen transfers two electrons to chlorine.

Hydrogen receives two electrons from chlorine.

Hydrogen forms an ion with −1 charge; chlorine forms an ion with +1 charge.

What happens when the compound MgO is formed? 3.02

Oxygen receives two electrons from magnesium.

Oxygen transfers two electrons to magnesium.

Magnesium forms an ion with −1 charge; oxygen forms an ion with +1 charge.

Magnesium forms an ion with +1 charge; oxygen forms an ion with −1 charge.

Which of these statements best describes the formula unit for a compound made from Mg and Cl? 3.02

It is MgCl 2 because the total positive charge on Mg is two.

It is MgCl 2 because the total negative charge on Cl is one.

It is Mg 2 Cl because the total negative charge on Mg is one.

It is Mg 2 Cl because the total positive charge on Mg is two.

What is the formula unit for a compound made from Ca and O? 3.02

CaO because the total positive charge on Ca is two.

CaO 2 because the total negative charge on O is two.

Ca 2 O because the total negative charge on Ca is one.

CaO because the total positive charge on O is one.

What is the formula unit for a compound made from Li and Cl? 3.02

LiCl because the total negative charge on Cl is one.

LiCl because the total negative charge on Li is two.

Li 2 Cl because the total positive charge on Cl is one.

Li 2 Cl because the total positive charge on Li is two.

What best describes the bonding in a water molecule? 3.03

An oxygen atom shares an electron pair with each H atom.

An oxygen atom shares a single electron with each H atom.

An oxygen atom receives an electron from each H atom.

An oxygen atom transfers an electron to each H atom.

What best describes the bonding in a silicon dioxide molecule? 3.03

A silicon atom shares two electron pairs with each oxygen atom.

A silicon atom transfers an electron to each oxygen atom.

A silicon atom receives two electrons from each oxygen atom.

A silicon atom shares an electron pair with each oxygen atom.

What best describes the bonding in a carbon dioxide molecule? 3.03

Carbon shares four of its electrons, and each oxygen shares two of its electrons.

Carbon shares two of its electrons, and each oxygen shares four of its electrons.

Carbon receives two electrons from each of the two oxygen atoms.

Carbon transfers two electrons to each of the two oxygen atoms.

Which of the following best represents and explains the formula for a compound made from carbon and hydrogen? 3.03

CH 4 , because four electron pairs are shared between carbon and hydrogen.

CH 2 , because two electron pairs are shared between carbon and hydrogen.

CH 4 , because each hydrogen contributes four electrons to the bonds.

CH 2, because each carbon contributes two electrons to the bonds.

Which of the following best represents and explains the formula for a compound made from nitrogen and hydrogen?

NH 3 , because nitrogen forms a single bond with each hydrogen atom.

NH 4 , because nitrogen needs four electrons, and each hydrogen needs one electron.

NH 4 , because nitrogen needs one electron, and each hydrogen needs four electrons.

NH 3 , because nitrogen forms a triple bond with each hydrogen atom.

Which of the following best represents and explains the formula for a compound made from fluorine and hydrogen? 3.03

HF, because both fluorine and hydrogen are capable of forming only one covalent bond.

HF, because both fluorine and hydrogen are capable of forming only one ionic bond.

H 2 F, because fluorine is short of two electrons, and hydrogen is short of one electron

H 2 F, because fluorine is capable of forming one, and hydrogen is capable of forming two covalent bonds

Look at this image. What does this image represent? 3.03

Formation of covalent bonds in water

Formation of ionic bonds in water

Transfer of valence electrons from oxygen to hydrogen

Sharing of valence electrons between two hydrogen atoms

Look at this image. What do the lines in this image represent? 3.03

Double covalent bonds in carbon dioxide

Ionic bonds between carbon and oxygen

Non-bonded valence electrons of oxygen

Valence electrons donated in carbon dioxide

Look at the image shown. What does this image represent? 3.05

Linear molecule with one domain

Linear molecule with two domains

Tetrahedral molecule with four domains

Trigonal planar molecule with three domains

Look at the image shown. What does this image represent? 3.05

Linear molecule with two domains

Linear molecule with one domain

Tetrahedral molecule with four domains

Trigonal planar molecule with three domains

Look at the image shown. What does this image represent? 3.05

Trigonal planar molecule with three domains

Linear molecule with one domain

Linear molecule with two domains

Tetrahedral molecule with four domains

Which of the following explains the VSEPR geometry of a water molecule? 3.05

It is bent because there are two bonded pairs and two lone pairs around oxygen.

It is bent because there are four bonded pairs around oxygen.

It is tetrahedral because there are four bonded pairs around oxygen.

It is tetrahedral because there are two bonded pairs and two lone pairs around oxygen

Which of the following explains the VSEPR geometry of a carbon tetrachloride molecule? 3.05

It is tetrahedral because there are four bonded pairs around carbon.

It is bent because there are four bonded pairs around carbon.

It is bent because there are two bonded pairs and two lone pairs around carbon.

It is tetrahedral because there are two bonded pairs and two lone pairs around carbon.

Which of the following explains the VSEPR geometry of an ammonia(NH 3 ) molecule? 3.05

It is trigonal pyramidal because there are three bonded pairs and one lone pair around nitrogen.

It is tetrahedral because there are four bonded pairs around nitrogen.

It is trigonal pyramidal because there are four bonded pairs around nitrogen

It is tetrahedral because there are three bonded pairs and one lone pair around nitrogen.

Module 3 Review

Authored by Ms. Gwin

Chemistry

9th - 12th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Neon is located in the last group of the periodic table. How many valence electrons does the element neon have? 3.01

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Lithium is located in the first group of the periodic table. How many valence electrons does the element lithium have? 3.01

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Carbon is located in the fourth tall column of the periodic table. How many valence electrons does the element carbon have? 3.01

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

A will give up electrons to form bonds.

B will give up electrons to form bonds.

Both A and B will be chemically unreactive.

Both A and B will gain electrons to become stable.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

A will give up electrons to form bonds.

B will give up electrons to form bonds.

Both A and B will be chemically unreactive.

Both A and B will gain electrons to become stable.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

A will give up electrons to form bonds.

B will give up electrons to form bonds.

Both A and B will be chemically unreactive.

Both A and B will gain electrons to become stable.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

OPEN ENDED QUESTION

3 mins • Ungraded

The electron configuration of an element is shown below.
1s²2s²2p⁶3s¹
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01

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Module 3 Review

Neon is located in the last group of the periodic table. How many valence electrons does the element neon have? 3.01

Lithium is located in the first group of the periodic table. How many valence electrons does the element lithium have? 3.01

Carbon is located in the fourth tall column of the periodic table. How many valence electrons does the element carbon have? 3.01

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

The electron configuration of an element is shown below.
1s²2s²2p⁶3s¹
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01

The electron configuration of an element is shown below.
1s²2s²2p⁶3s²3p⁶
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01

The electron configuration of an element is shown below.
1s²2s²2p⁵
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01

What is the charge on an atom after it gains an electron during the formation of a bond? 3.02

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Module 3 Review

Neon is located in the last group of the periodic table. How many valence electrons does the element neon have? 3.01

Lithium is located in the first group of the periodic table. How many valence electrons does the element lithium have? 3.01

Carbon is located in the fourth tall column of the periodic table. How many valence electrons does the element carbon have? 3.01

The table shows the total number of electrons in Atom A and Atom B.Which statement is correct? 3.01

The table shows the total number of electrons in Atom A and Atom B.Which statement is correct? 3.01

The table shows the total number of electrons in Atom A and Atom B.Which statement is correct? 3.01

The electron configuration of an element is shown below.1s22s22p63s1Name the group this element belongs to in the periodic table and explain your answer.Based on the electron configuration, write one chemical property of this element. 3.01

The electron configuration of an element is shown below.1s22s22p63s23p6Name the group this element belongs to in the periodic table and explain your answer.Based on the electron configuration, write one chemical property of this element. 3.01

The electron configuration of an element is shown below.1s22s22p5Name the group this element belongs to in the periodic table and explain your answer.Based on the electron configuration, write one chemical property of this element. 3.01

What is the charge on an atom after it gains an electron during the formation of a bond? 3.02

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The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

The table shows the total number of electrons in Atom A and Atom B.
Which statement is correct? 3.01

The electron configuration of an element is shown below.
1s²2s²2p⁶3s¹
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01

The electron configuration of an element is shown below.
1s²2s²2p⁶3s²3p⁶
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01

The electron configuration of an element is shown below.
1s²2s²2p⁵
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element. 3.01