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Bio Stack 2 Houtchen

Biology - pH, Acids, Basis, Buffers, Enzymes

Pure water has a pH of _______ pH of 7
A base has more _______________ ions Hydroxide OH-
The lower the number on a pH scale the more ____________ the substance. Acidic
pH of 7 indicates a Neutral, Acid or Base Neutral
pH greater than 7 indicates a Neutral, Acid or Base Base
pH less than 7 indicates a Neutral, Acid or Base Acid
Any compound that forms hydroxide ions in solution is known as a(n) Base
The pH scale is used to indicate the concentration of ______________ ions in a solution Hydrogen H+
Any compound that forms hydrogen ions in solution is known as a(n) _____________ Acid
The range of the pH scale is from ______ to ________ 0 to 14
A substance that is basic is also known as being _________________ Alkaline
An acid has more _______________ ions Hydrogen H+
The higher the number on the pH scale the more ____________ the substance. Basic
A weak acid or base that reacts with a strong acid or base to prevent a sudden or sharp change in pH. Buffer
Buffers help to maintain ________________ in organisms by controlling the pH level Homeostasis
pH in the human body must be kept between _______ to ______ 6.5 to 7.5 pH
Process that changes, or transforms one set of chemicals into another. Chemical Reaction
Compounds that enter into a chemical reaction Reactants
Elements or compounds produced by the reaction Products
____________ ___________ involves changes in the chemical bonds that join atoms in compounds. Chemical Reaction
A chemical reaction that occurs on its own usually _____________ energy. Releases
Energy needed to get a reaction started. Activation Energy
A substance that speeds up the rate of a chemical reaction by lowering the activation energy needed. Catalyst
A protein that acts as a biological catalyst Enzyme
The reactants of enzyme-catalyzed reaction are known as ______________ Substrates
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