Chemical Reactions, Equations, and Conservation of Mass

Chemical Reactions, Chemical Equations and Conservation of Mass

Match

Match the following

Physical Change

Chemical change

Chemical Change

Physical Change

Chemical change

• Physical Change

• Chemical change

• Chemical Change

• Physical Change

• Chemical change

Dropdown

​

Select answer

change occurs when a substance changes in appearance, such as dissolving. ​



A ​ ​

Select answer

change occurs when a new substance is formed, with evidence being precipitate formation.

Labeling

Label the parts of the reaction.

Drag labels to their correct position on the image

Products

Reactants

Labeling

Label the reactants and products in the chemical equation shown.

Drag labels to their correct position on the image

Products

Reactants

Categorize

Options (4)

CO₂

H₂O

O₂

C₁₀H₂₂

In the equation pictured here, which substances are products? Which are reactants?

Products

Reactants

Multiple Choice

In this image, what are the information to the right of the arrow (in black) is called the_______.

• Product
• Reactant
• Chemical Subscript

Multiple Choice

The reactants in the image above are:

• CH4 and 2 O2

• 2 H2O and CO2

• All of these are reactants

• All of these are products

Multiple Choice

The number and type of atoms on each side of a chemical equations must be

• equal

• different

• doubled

• tripled

Multiple Choice

A sealed test tube containing 8 grams of iron filings and 5 grams of sulfur is heated until the material in the test tube glows bright red.  What is the mass of products? 

• Mass is less than 13 grams
• Mass is equal to 13 grams
• Mass is greater than 13 grams
• Mass cannot be measured

Multiple Choice

Does this equation follow the law of conservation of mass?

• Yes, because the mass is the same.

• Yes, because the mass is not the same.

• No, because the mass is the same.

• No, because the mass is not the same.

Multiple Choice

What does the Law of Conservation of Mass state?

• Matter is created and destroyed in a chemical reaction.

• Matter is neither created nor destroyed, just transferred.

• Matter is only destroyed in a chemical reaction.

• Matter can be transformed into energy.

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Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Chemical Reactions, Chemical Equations and Conservation of Mass

Show answer

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SLIDE

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Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Chemical Reactions, Chemical Equations and Conservation of Mass

Show answer

Auto Play

Slide 1 / 69

SLIDE

Video from Google Slides

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Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Chemical Reactions, Chemical Equations and Conservation of Mass

Show answer

Auto Play

Slide 1 / 69

SLIDE

Video from Google Slides

Video from Google Slides

Video from Google Slides

Video from Google Slides

Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Chemical Reactions, Chemical Equations and Conservation of Mass

Show answer

Auto Play

Slide 1 / 69

SLIDE

Video from Google Slides

Video from Google Slides

Video from Google Slides

Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Video from Google Slides

Video from Google Slides

Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Video from Google Slides

Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident

Dropdown

In this reaction the products have ​

Select answer

​ Iron (Fe) and ​

Select answer

oxygen (O)

Drag and Drop

Let's help Sam and Jamie figure out the chemistry of acetic acid (the substance that gives vinegar its sour taste). Look at the model of acetic acid and count how many of each type of atom are in this molecule.

Number of C (carbon):

Placeholder

Number of H (hydrogen):

Placeholder

Number of O (oxygen):

Placeholder

Drag these tiles and drop them in the correct blank above

2

4

2

Labeling

Please drag the coefficients to the proper location for this equation will be balanced.

Drag labels to their correct position on the image

4

3

2

1

Hotspot

Which balanced equation represents a reaction that involves 6 atoms of Oxygen?

Drag and Drop

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown below. According to the Law of Conservation of Mass, what happens to the TOTAL mass as the reaction takes place?



The mass will ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

remain constant

increase

decrease

first decrease and then increase

Labeling

Balance the chemical equation by adding the correct coefficients.

Drag labels to their correct position on the image

2

3

4

Drag and Drop

The following reaction is NOT balanced. Only ​

Placeholder

requires a coefficient of​ 2 . ​

Drag these tiles and drop them in the correct blank above

HCl

CuS

1

4

Multiple Choice

The blue numbers in the image below represent ________

• solvents

• coefficients

• subscripts

• elements

Multiple Choice

Does this equation demonstrate the law of conservation of mass?

• Yes, reactants equal products

• No, reactants do NOT equal products

Dropdown

What is the coefficient or number of moles for each molecule shown in the equation. ​

Select answer

CH₄ , ​

Select answer

O₂ , ​

Select answer

CO₂​ , ​

Select answer

H₂O

Multiple Choice

How many hydrogen atoms are on the product side of the balanced chemical equation?

2C₂H₆ + 7O₂ --> 4CO₂ + 6H₂O

• 2

• 4

• 8

• 12

Multiple Choice

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 3, 2, 6
• 4, 3, 1, 12
• 1, 6, 2, 6

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident