Predicting Single and Double Replacement Reactions

What type of reaction occurs between an element and a compound?

Ex: Zn + 2HCl --> ZnCl₂ + H₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

What kind of reaction is this:
Fe + CuSO₄ -> Cu + FeSO₄

• Double Replacement

• Decompostion

• Single Replacement

• Combustion

Answer explanation

Reactants: a single element and a compound

Products: a new compound and a different single element

Ex: A + BC --> AC + B

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The reaction below is an example of?
AgNO₃ + NaCl → AgCl + NaNO₃

• Single Replacement

• Double Replacement

• Decomposition

• Combustion

Answer explanation

Reactants: 2 compounds

Products: 2 new compounds

(a.k.a. ion swap)

Ex: AB + CD --> AD + CB

Which type of reaction can be recognized by the general pattern?
A + BC--> AC + B

• Decomposition

• Combustion

• Single Replacement

• Double Replacement

Answer explanation

Reactants: a single element and a compound

Products: a new compound and a different single element

What is the general reaction scheme for a single replacement reaction?

• A + B --> AB

• AB --> A + B

• A + CD --> C + AD

• AB + CD --> CB + AD

Tags

NGSS.MS-PS1-5

Which of the following represents a single replacement reaction?

• A + B > AB

• AB > A + B

• A + BC > AB + C

• AB + CD > AC + BD

What is the general form of a single replacement reaction?

What is a single replacement reaction?

• A reaction where two compounds react to form two new compounds.

• A reaction where a single element replaces another element in a compound.

• A reaction where two elements combine to form a compound.

• A reaction where a compound breaks down into its elemental parts.

Single Replacement reaction; how do you know?

• Two elements form a new product.

• A hydrocarbon fuel reacts with oxygen to form carbon dioxide and water.

• A single substance breaks into it's different molecules.

• Two molecules bond to form a new product.

• A single metal cation takes another metals nonmetal anion and leaves it unbonded.

Which of the following is a single replacement reaction?

• 2H₂O > 2H₂ + O₂

• Fe + CuSO₄ > FeSO₄ + Cu

• Cu + SO₄ > CuSO₄

Tags

NGSS.MS-PS1-2