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