Unit 5: Section 2 & 3 "Chemical Reactions and Acids/Bases"
process in which substances undergo chemical changes that result in the formation of new substances.
a solid that forms from a solution during a chemical reaction.
A short way to show a chemical reaction, using symbols.
substances that enter into a chemical reaction. They are on the left side of a chemical equation. REACTANTS -------- PRODUCTS
substances produced as a result of a chemical reaction. They are on the right side.
A system in which matter can enter from or escape to the surrounding.
A system in which no matter is allowed to enter or leave.
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant & product are involved in a reaction.
A chemical reaction in which two or more simple substances combine to form a new, more complex substance. A + B --- AB
A chemical reaction that breaks down reactants into simpler products. AB --- A + B
A reaction in which one element replaces another in a compound or when two elements in different compounds trade places.
The minimum amount of energy needed to get a chemical reaction started.
The amount of one material in a certain volume of another material.
a material that increases the rate of a reaction by lowering the activation energy.
A biological catalyst that lowers the activation energy of reactions in cells.
a material that decreases the rate of a reaction.
A rapid reaction between oxygen and ruel that results in fire.
A material that releases energy when burned.
a substance that tastes sour, reacts with metals and carbonates, and turns blue litmus red. Corrosive The gradual wearing away of a metal element due to a chemical reaction.
A compound that changes color in the presence of an acid or a base.
A substance that tastes bitter, feels slippery, and turns red litmus paper blue.
Hydrogen ion (H+)
A positively charged ion (H+) formed of a hydrogen atom that has lost its electron.
Hydroxide ion (OH-)
A negatively charged ion made of oxygen & hydrogen (OH-)
A range of values used to express the concentration of hydrogen ions in a solution.
A reaction of an acid with a base, yielding a solution that is not as acidic or basic as the starting solutions were.
An ionic compound made from the neutralization of an acid with a base.