Unit 4 - Chemical Transformations

When two or more substances combine in order to make a single new substance. 

• Synthesis reaction

• Phase transition
• Physical change
• Mixture formation

decomposition reaction

• A decomposition reaction involves the transfer of electrons between two substances.
• A decomposition reaction is when two compounds combine to form a single product.
• A decomposition reaction is a process where energy is absorbed without any change in the substances involved.
• A decomposition reaction is a reaction where one compound breaks down into two or more simpler substances.

Single replacement reaction

• A + BC → AC + B
• A + B + C → AC + B
• AB + C → A + BC
• A + B → AC + C

double replacement reaction

• A double replacement reaction involves the combination of two elements to form a single compound.
• A double replacement reaction is when one compound decomposes into two simpler substances.
• A double replacement reaction occurs when two compounds react to produce a gas and a solid.
• A double replacement reaction is a type of chemical reaction where two compounds exchange components to form two new compounds.

• Precipitation Reaction

• A reaction that produces an insoluble solid from soluble reactants.
• A reaction that results in a color change without any solid product.
• A reaction that involves only soluble reactants without any solid formation.
• A reaction that produces a gas from solid reactants.

• Acid-Base Reaction

• Acid-base reaction is a type of oxidation reaction.
• Acid-base reaction is a proton transfer reaction.
• Acid-base reaction produces only gases.
• Acid-base reaction involves electron transfer.

combustion reaction

• A combustion reaction occurs only in the absence of oxygen.
• A combustion reaction is a rapid reaction between a fuel and oxygen that produces heat and light.
• A combustion reaction is a slow process that absorbs heat.
• A combustion reaction involves only solid fuels without any gases.

Redox Reactions

• Redox reactions do not involve any chemical changes.
• Redox reactions only occur in acidic solutions.
• Redox reactions are solely about the transfer of protons.
• Redox reactions involve electron transfer.

• ALL of previous reactions (EXCEPT ------) are also considered redox reactions. 

• double displacement reaction
• combination reaction
• decomposition reaction
• synthesis reaction

Precipitation reactions

• A precipitation reaction involves the evaporation of a liquid.
• A precipitation reaction occurs only in gaseous reactants.
• A precipitation reaction results in the formation of an insoluble solid from soluble reactants.
• A precipitation reaction results in the formation of a soluble gas.