Chemical Interactions

Number of H in 3(NH₄)₂CrO₄

• 4
• 6
• 8
• 24

Which problem is balanced?

• PbO₂ + 2H₂--> H₂SO₄
• SO₂ + H₂0 --> H₂SO₄
• 2Na + 2H₂O --> 2NaOH + H₂
• 2Na + 2H₂O --> 2NaOH + H

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__MnO₂ + __HCl --> __MnCl₂ + __H₂O __Cl₂

• 4,1 --> 2,1,2
• 1,2 --> 1,1,4
• 1,4 --> 1,2,1
• 1,4 --> 2,2,1

CaCO₃ ----> CaO + CO₂

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

Tags

NGSS.MS-PS1-5

2 MgI₂ + Mn(SO₃)₂ ----> 2 MgSO₃ + MnI₄

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

2 C₅H₅ + Fe ----> Fe(C₅H₅)₂

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

2 AgNO₃ + Cu ----> Cu(NO₃)₂ + 2 Ag

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What are the coefficients when the equation is balanced?

• 2 + 3 --> 2 + 3 + 4
• 1 + 3 --> 1 + 3 + 2
• 2 + 4 --> 2 + 3 + 2
• 1 + 1 --> 1 + 1 + 1

Tags

NGSS.HS-PS1-7

Which of the following is a neutralization reaction?

• 2Na + Cl₂ → 2NaCl

• CH₄ + 2O₂ → CO₂ + 2H₂O

• HCl + KOH → KCl + H₂O

• CaCO₃ → CO₂ + CaO

Tags

NGSS.MS-PS1-2