Chemistry Unit Flashcardizz ADV

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created or destroyed, and the mass of the products must equal the mass of the reactants.

Front

According to the law of conservation of mass, matter cannot be ________

Back

destroyed.

Front

What is an anion?

Back

An anion is a negatively charged ion.

Front

What is a valence electron?

Back

The number of electrons in the outermost shell of an atom.

Front

What are Chemical Reactions?

Back

A process in which atoms rearrange to form new substances.

Front

What is a cation?

Back

A cation is a positively charged ion.

Front

Define an element.

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is a reactant?

Back

A substance that undergoes a chemical change in a reaction.