Chemical equation and types of reactions practice

Which represents a balanced chemical equation?

• CO₂ + 2H₂O → 2CH₄ + 2O₂

• CH₄ + O₂ → CO₂ + H₂O

• CH₄ + 2O₂ → CO₂ + 2H₂O

• CO₂ + H₂O → CH₄ + O₂

Tags

NGSS.MS-PS1-5

The conservation of matter can be demonstrated by using chemical equations. Which chemical equation demonstrates the conservation of matter?

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Which of the following is the balanced chemical equation that represents the chemical reaction of potassium and oxygen to produce potassium oxide?

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What reaction has the following general formula:

AB --> A + B

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Tags

NGSS.MS-PS1-2

What reaction has the following general formula:

A + CD --> C + AD

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Tags

NGSS.MS-PS1-2

What reaction has the following general formula:

AB + CD --> CB + AD

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Tags

NGSS.MS-PS1-2

What reaction has the following general formula:

A + B --> AB

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What reaction has the following general formula:
 $C_xH_y\ +\ O_2\ ->CO_{2\ }+\ H_2O$  

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Tags

NGSS.MS-PS1-2

What is the general reaction scheme for a single replacement reaction?

• A + B --> AB

• AB --> A + B

• A + CD --> C + AD

• AB + CD --> CB + AD

• $C_xH_y+O_2\ ->\ CO_2+H_2O$

Tags

NGSS.MS-PS1-5

What is the general reaction scheme for a combustion  reaction?

• A + B --> AB

• AB --> A + B

• A + CD --> C + AD

• AB + CD --> CB + AD

• $C_xH_y+O_2\ ->\ CO_2+H_2O$

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5