Chemical Reactions and Equations

True or False: During a chemical reaction, products are chemically changed into reactants.

• True

• False

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

If I have a propane torch, turn on the gas and ignite it so that it burns, what is the special type of chemical reaction called that I just started?

• Combustion

• Synthesis

• Decomposition

• Single Replacement

Tags

NGSS.MS-PS1-5

In the following chemical equation, identify the products and the reactants: C₄H₁₀ + O₂ → CO₂ + H₂O.

• Products: CO₂, H₂O; Reactants: C₄H₁₀, O₂

• Products: C₄H₁₀, O₂; Reactants: CO₂, H₂O

• Products: C₄H₁₀, CO₂; Reactants: O₂, H₂O

• Products: O₂, H₂O; Reactants: C₄H₁₀, CO₂

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

Write the balanced chemical equation for the following reaction: carbon tetrafluoride reacts with dibromide to form carbon tetrabromide and difluoride.

• CF₄ + Br₂ → CBr₄ + F₂

• CF₄ + Br₂ → CBr₄ + 2F₂

• CF₄ + 2Br₂ → CBr₄ + 2F₂

• CF₄ + 2Br₂ → CBr₄ + F₂

Tags

NGSS.MS-PS1-5

Does the following reaction violate the law of conservation of mass? 2 NaF + Br₂ → 2 NaBr + F₂.

• Yes

• No

Tags

NGSS.MS-PS1-5

Balance the following chemical equation: Dihydrogen reacts with dioxygen to form dihydrogen oxide.

• A) H₂ + O₂ → H₂O
• B) 2H₂ + O₂ → 2H₂O
• C) H₂ + 2O₂ → 2H₂O
• D) 2H₂ + 2O₂ → 2H₂O

Tags

NGSS.MS-PS1-5

Balance this equation:

​ (a)   Fe + ​ (b)   O₂ --> ​ (c)   Fe₂O₃

• 4
• 3
• 2
• 1
• 0

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Number of C: ​ (a)  

Number of H: ​ (b)  

Number of O: ​ (c)  

• 4
• 6
• 8
• 2
• 3
• 1
• 5
• 7
• 9
• 10

Tags

NGSS.MS-PS1-1

The right side of the equation below is called the

• products

• reactants

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

Identify the type of chemical reaction (a)  

• Synthesis
• Decomposition
• Single replacement
• Double replacement
• Combustion

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2