Chemical Reactions Flashcard

Front

What is formed when two or more atoms chemically combine?

Back

Molecule

Front

What type of change occurs when a solid material is cut into two equal pieces?

Back

Physical change

Front

What is an unexpected change in color a sign of?

Back

A chemical reaction may have occurred.

Front

In a chemical process, atoms are regrouped into different what?

Back

Molecules

Front

What is an indicator of a chemical reaction when substances give off a smell?

Back

Odor

Front

What do we call the substances that undergo a chemical change?

Back

Reactants

Front

What do we call the new substances formed as a result of a chemical reaction?

Back

Products

Front

What is a change that alters the chemical composition of a substance?

Back

Chemical change

Front

What is the term for a solid that forms from a solution during a chemical reaction?

Back

Precipitate

Front

What is the process called when heat is absorbed or released during a chemical reaction?

Back

Thermal change