Chemical Reactions

Which type of chemical reaction is shown?

• double replacement
• composition
• combustion
• decomposition

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which type of reaction can be recognized by the general pattern?

• combustion
• single replacement
• composition
• decomposition

What is the correct ratio of coefficients to balance this chemical equation?

• 1:2:3
• 1:2:1:5
• 2:4:3
• 1:1:2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which type of reaction is Al  +  O₂   → Al₂O₃?

• composition
• decomposition
• single replacement
• combustion

Aluminum (Al) has three electrons in its outer shell.  Oxygen (O) needs two electrons to complete its outer shell.  What is the chemical formula for aluminum oxide?

• AlO
• AlO₂
• Al₂O
• Al₂O₃

Tags

NGSS.MS-PS1-1

Identify the type of chemical reaction demonstrated by this equation:
KClO₃  →  KCl  +  O₂

• decomposition
• combustion
• compositions
• single replacement

Which type of chemical reaction is this an example of?
Fe₂(SO₄)₃  + KOH →  K₂SO₄  +  Fe(OH)₃

• composition
• double replacement
• single replacement
• combustion

Identify the type of reaction shown by this chemical equation:
Al  +  HCl  →  AlCl₃  +  H₂

• single replacement
• composition
• double replacement
• decomposition

Which is the correctly balanced equaition?

• Cl₂ + 2NaI → 2NaCl + I₂

• Cl₂ + 2NaI → NaCl + 2I₂

• Cl₂ + NaI → NaCl + I₂

• 2Cl₂ + NaI → 2NaCl + I₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What reaction has the following general formula:

AB --> A + B

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion