Chemical Reactions Review

Identify this type of reaction,
Cl₂ + 2KI _-->  I₂ + 2KCl

• Synthesis
• Single displacement
• Double displacement
• Decomposition

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

What type of reaction involves ions from 2 compounds exchanging places to form 2 completely new compounds?

• Single Displacement Reaction
• Double Displacement Reaction
• Synthesis Reaction
• Decomposition Reaction

Balance this reaction: ____ Na₃PO₄ + ____ KOH ---> ____ NaOH + ____ K₃PO₄

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

_P₄+_O₂ →  _P₂O₃

• 3 P₄+1 O₂ → 2 P₂O₃
• 1 P₄+1 O₂ → 2 P₂O₃
• 1 P₄+ 3 O₂ → 2 P₂O₃
• 1 P₄+ 2 O₂ → 3 P₂O₃

Tags

NGSS.HS-PS1-7

Balance this equation,            Al₂O₃ ---> Al + O₂ 

• Cannot be balanced
• 2Al₂O₃ ---> 2Al + 3O₂ 
• 2Al₂O₃ ---> 4Al + 3O₂ 
• 3Al₂O₃ ---> 2Al + O₂ 

Tags

NGSS.HS-PS1-7

Classify
CH₄ + O₂ → CO₂ + H₂O 

• single replacement
• double replacement
• synthesis
• combustion

This image represents

• a double replacement reaction
• a decomposition reaction
• a single replacement reaction
• a complex compound reaction

Tags

NGSS.MS-PS1-2

How many Sodium (Na) are in 6NaCl?

• 1
• 12
• 6

Tags

NGSS.MS-PS1-1

Balance this equation: ___ Cl₂ + ___ KI → ___ KCl + ___ I₂

• ___ Cl₂ + ___ KI → ___ KCl + 2 I₂

• 2 Cl₂ + ___ KI → ___ KCl₂ + ___ I₂

• ___ Cl₂ + 2 KI → 2 KCl + ___ I₂

Tags

NGSS.HS-PS1-7