Reaction Types and Balancing Equations

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O
• MgO
• Mg and MgO
• O and MgO

Balance this equation, Ca + H₂O --> CaO + H₂

• Ca + 2H₂O --> CaO + 2H₂

• 2Ca + H₂O --> CaO + H₂

• Its balanced as it is

• Cannot be balanced

Tags

NGSS.HS-PS1-7

name this reaction,  Ca + O --> CaO

• Decomposition
• Synthesis
• Double Replacement
• Combustion

Name this reaction, Cl₂ + 2KI _-->  I₂ + 2KCl

• Synthesis
• Single Replacement
• Double Replacement
• Decomposition

Predict this reaction,                K₂O + H₂O --> ?

• KO₂ + H₂O
• KH₂O
• K₂OH₂O
• 2KOH

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Predict this reaction,  Ca + 2HCl --> ?

•  4CaCl₃ + H₂
• no reaction
•  CaH₂ + Cl
•  CaCl₂ + H₂

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

What does the (aq) stand for in NaCl (aq)?

• solid
• aqueous 
• liquid
• gas

In chemical reactions, the law of conservation of mass is......

• disobeyed
• not true
• obeyed
• used sometimes

Tags

NGSS.HS-PS1-7

The substances made during the chemical reaction are called ________

• reactants
• solution
• products
• problem

Tags

NGSS.MS-PS1-2

Which chemical reaction forms Carbon Dioxide and Water?

• Double Replacement
• Single Replacement
• Combustion
• Decomposition

Tags

NGSS.MS-PS1-5