Unit 7 Chemical Reactions

The number of atoms you begin with in a chemical reaction ...

• must be the same as the number of  atoms you end with
• must be an even number
• can be different to the number you finish with
• changes depending on how much energy is formed

Tags

NGSS.MS-PS1-5

Balance the following:

____ Fe + ____ Cl₂ → ____ FeCl₃

• 1,1,2
• 1,3,1
• 2,2,3
• 2,3,2

Tags

NGSS.MS-PS1-5

Balancing the following:

____ Al + ____ HCl → ____ AlCl₃ + ____ H₂

• 1,3,1,2
• 2,3,2,3
• 2,6,2,3
• 3,2,6,2

Tags

NGSS.MS-PS1-5

In a neutralization reaction, acid HCl and base NaOH will react to produce __________

• CO₂ + H₂O

• NaCl + H₂O

• H₂ + O₂

• NaH₂ + H₂O

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

What is always produced in a neutralization reaction?

• CO₂

• H₂O

• NaCl

• Acid

Which type of reaction is this?

2 NaBr + Ca(OH)₂ → CaBr₂ + 2 NaOH

• Synthesis

• Single replacement

• Double replacement

• Combustion

Balance the following chemical reaction with the right coefficients:

​ C₂H₄ + O₂ → CO₂ + H₂O

• 1, 3, 2, 2
• 2, 3, 2, 2

• 2, 6, 4, 2

• 1, 3, 3, 3

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which type of reaction is:

2 H₃AsO₄ → As₂O₅ + 3 H₂O

• Synthesis

• Decomposition

• Single replacement

• Combustion

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which type of reaction is:

2 NH₃ + H₂SO₄ → (NH₄)₂SO₄

• Synthesis

• Decomposition

• Single replacement

• Double replacement

Predict the products of the following reaction. You do not have to balance the reaction.

Pb + H₃PO₄ →

• PbH₃PO₄

• H₂ + Pb₃(PO₄)₂

• PbH₃ + PO₄

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1