Classifying Chemical Reactions

In a chemical equation, is it true that -

• the reactant side and product side can have different numbers of atoms for each element
• there can be different elements on the reactant side and the product side
• an element or compound must be accompanied by a phase change
• the coefficients indicate the number of molecules of each reactant used and the number of molecules of each product made

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The reactants are on the left side of the chemical equation.

• True
• False

Tags

NGSS.MS-PS1-5

AB + CD →AD + CB

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

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

• Synthesis
• Single displacement
• Double displacement
• Decomposition

2 C₅H₅ + Fe --> Fe(C₅H₅)₂ 

• single displacement
• double displacement
• decomposition
• synthesis

2 RbNO₃ + BeF₂ --> Be(NO₃)₂ + 2 RbF

• single displacement
• double displacment
• decomposition
• synthesis

Tags

NGSS.MS-PS1-5

Which chemical reaction breaks down into 2 substances?

• Double displacement
• Single displacement
• Synthesis
• Decomposition

Which of the following is an example of synthesis?

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

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following is the general formula for a decomposition reaction?

• A + B  → AB
• AB → A + B
• AB + C → AC + B
• AB + CD → AC + BD

2 AgNO₃ + Cu --> Cu(NO₃)₂ + 2 Ag 

• single displacement
• double displacement
• decomposition
• synthesis

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5