Unit 04 Test Review - IPC

Front

What element has to be present in order for a combustion reaction to occur?

Back

Hydrogen

Front

Which equation represents the law of conservation of mass?

Back

3Na + Cl₂ → 3NaCl

Front

Why did the solution in the beaker lose mass?

Back

Some of the water molecules turned into gas and dissipated.

Front

What type of reaction is represented by a single replacement reaction?

Back

A reaction where one element replaces another in a compound.

Front

How does the equation 2H₂ + O₂ → 2H₂O demonstrate the law of conservation of mass?

Back

The reactants and product contain the same number and type of atoms.

Front

What is a combustion reaction?

Back

A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat.

Front

Define the law of conservation of mass.

Back

Mass is neither created nor destroyed in a chemical reaction; it is conserved.

Front

What is a synthesis reaction?

Back

A reaction where two or more substances combine to form a new compound.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

What is a double replacement reaction?

Back

A reaction where two compounds exchange ions or bonds to form two new compounds.