This always results from chemical reactions
What are chemical changes?
This is a covalently bonded group of atoms that has a positive or negative charge and acts as a unit
What are Polyatomic ions?
This occurs when two or more substances react to form a single compound
What is a synthesis reaction?
This occurs when a compound breaks down into two or more simpler substances
What is a decomposition reaction?
This refers to the energy stored in chemical bonds
What is chemical energy?
Compounds made up of only two elements
What are Binary compounds?
This is the common name for dihydrogen monoxide
What is water?
This chemical reaction occurs when one element takes the place of another element in a compound
What is a single replacement reaction?
This chemical reaction occurs when two compounds exchange positive ions and form new compounds
What is a double replacement reaction?
The amount of a substance that contains approximately 6.02 x10(23) particles of the substance
What is a mole?
These are formed when atoms share electrons in covalent bonds
What are Molecular compounds?
This is the chemical name for salt
What is Sodium Chloride?
This chemical reaction occurs when a substance reacts rapidly with oxygen, often producing heat and light
Wat is a combustion reaction?
ALL combustion reactions will have this as one of the reactants
What is oxygen gas?
A chemical reaction that absorbs energy from its surroundings
What is an endothermic reaction?
This covalently bonded group of atoms have their own naming systems
What are polyatomic ions?
When writing a formula for an ionic compound, this is placed first
What is a cation?
Reactions are usually classified by the type or number of reactants and this
What are products?
These are the opposite of synthesis reactions
What are decomposition reactions?
This chemical reaction releases energy to its surroundings
What is an exothermic reaction?
This organizatiion created the standardized system for naming compounds and writing formula
What is the IUPAC?
These are used to tell the number of atoms of each element in a molecular compound
What are Greek prefixes?
This occurs when electricity passes through water
What is water electrolysis?
These kinds of atoms are common fuel for combustion reactions
What are carbon and hydrogen atoms?
This is the unit of measurement for energy
What is a joule?