Science final exam G8 (3)

Is a way to describe a chemical reaction, using symbols instead of words.

• Chemical symbol

• chemical equation

• chemical formula

We conclude that the total mass ....................... before and after the chemical reaction

• stays the same

• increases

• decreases

Matter can enter from or escape to the surrounding in .............................

• closed system

• open system

• sealed system

This picture represents ........................... chemical reaction.

• Synthesis

• Decomposition

• Replacement

This picture represents .......................... chemical reaction.

• Synthesis

• Decomposition

• Relacement

The Chemical Equation conveys the identities of the molecules involved in the reaction.

• True

• False