Chemical Reaction

Leaves are green because they contain a green substance, or pigment. This pigment is called_____

• pigment

• chlorophyll

• color change

• chemical reaction

A ____ ______ is a process in which one or more substances change to make one or more new substance

• physical change

• chemical change

• Chemical reaction

A solid that is produced as a result of a chemical reaction in solution

• Precipitate

• Color Change

• Energy change

name four possible signs that a chemical reaction has taken place.

• Gas formation

• Color Change

• Energy Change

• Solid Formation

A chemical bond is a force that holds two atoms together in a molecule.

• True

• False

During a reaction, bonds are broken, atoms are rearranged, and new bonds are formed

• True

• False

What happens to chemical bonds during a chemical reaction.

• they break

• new ones are formed

• they bond together

• they expand

A combination of chemical symbols and numbers to represent a substance is called _______

• Chemical formula

• Chemical equation

• Chemical reaction

• Chemical change

A representation of a chemical reaction that uses symbols to show the relationship between the reactant and the product

• Chemical formula

• reactant

• product

• Chemical equation

A substance or molecule that participates in a chemical reaction

• product

• reactant