Review Questions for Final Exam

Front

What is a chemical test for oxygen gas?

Back

Relights a glowing splint.

Front

How do you balance the equation Na + Cl2 → NaCl?

Back

2,1,2

Front

What states of matter can covalent compounds exist in at room temperature?

Back

Some are solids, some are liquids, and some are gases.

Front

What type of chemical reaction is CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)?

Back

Combustion.

Front

How many valence electrons does Phosphorus have?

Back

5.

Front

What is the definition of a covalent compound?

Back

A compound formed by the sharing of electrons between atoms.

Front

What is the definition of a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

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.