Chemistry Flashcards
What is a covalent bond?
A type of chemical bond that occurs between non-metal atoms.
What is an ion?
An atom or molecule that has gained or lost one or more electrons and is electrically charged.
What is an ionic bond?
A type of chemical bond that occurs between oppositely-charged ions.
Define a polyatomic ion.
A group of covalently-bonded atoms that is electrically charged.
What is a product in a chemical reaction?
A substance that is produced during a chemical reaction.
What is a reactant in a chemical reaction?
A substance that undergoes change during a chemical reaction.
What is a valence electron?
An electron that occupies the outermost energy level of an atom.
Fill in the blank: A substance that is produced during a chemical reaction is called a _______.
product
Fill in the blank: A substance that undergoes change during a chemical reaction is called a _______.
reactant
What is the Law of Conservation of Mass?
The Law of Conservation of Mass states that mass can neither be created nor destroyed, only transformed from one form to another
What is the general formula for combustion?
Fuel + O2 → CO2 + H2O
Fuel + oxygen -> carbon dioxide + water + energy
