Has the same number of atoms of each element on the left side of the yield sign as on the right side of the yield sign
What are balanced equations
200
Substances that are produced
What are products
200
Tells the number of atoms of an element that are presents; always written to the right of the element that it represents.
What is subscript
200
Atoms with 8 valence electrons
What is stable
200
Substances that react during a chemical reaction
What are reactants
200
Group of chemical symbols and numbers that show what is in a compound
What is a chemical formula
300
Process by which one or more substances undergo change to produce one or more different substances
What are chemical reactions
300
Any compound that increases the number of hydroxide ions when dissolved in water, and whose solution tastes bitter, feels slippery, and can change the color of certain compounds.
What is base
300
Short way to describe the changes that occur during a chemical reaction
What is a chemical equation
300
formed when atoms transfer (gain or lose) electrons
What are ionic bonds
300
Atoms form bonds with other atoms so that they will have eight electrons in their own shell
What is the octet rule
400
A measure of Hydronium ion concentration in a solution, a pH of 7 is neutral; a pH less than 7 is acidic; a pH greater than 7 is basic
What is pH
400
Matter can't be created or destroyed; it can only be changed from one form to another; applies to chemical reaction.
What is the Law or Conservation of Mass
400
Any compound that increases the number of hydrogen ions when dissolved in water, and whose solution tastes sour and can change the color of certain compounds.
What is acid
400
ionic compound formed from the positive ion of a base and negative ion of an acid
What is salt
400
Formed when atoms share electrons to fill their outer shell