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Acid/Bases
Question | Answer |
---|---|
Chemical Property | Characteristics that gives a substance the ability to undergo a change that results in a new substance. |
Chemical Change | Changes in the identity of a substance due to its chemical properties/ not reversible; only sometimes/ rate of reaction influenced by temp, concentration and exposed surface. |
Slow Oxidation | Occurs at ordinary temp/ produces no light/ no noticeable heat. |
Fast Oxidation | Occurs rapidly/ burning of a materiel/ produces light/ noticeable heat. |
Food Spoilage | Oxidation process or enzyme action/ meat and fruit enzymes breakdown tissues unless inactivated (stopped)/ oxidation is caused by the oxygen in the air. |
Energy | Released or absorb during a chemical reaction. |
Endothermic Reaction | Absorb heat energy. |
Exothermic Reaction | Releases heat energy. |
Inhibitor | Slows down a chemical reaction. |
Catalyst | Speeds up a chemical reaction |
Activation Energy | Energy need to get a reaction started. |
Law of Conservation of Mass | By Antoine Lawoisier/ matter cannot be created nor destroyed. |
PH Scale | Power of Hydrogen or potential Hydrogen/ determines the acidity or base of a solution/ PH scale ranges from 0-14 Acid=0- 6.9 Neutral=7 Base= 7.1- 14 |
Indicator | Substance that changes color at different PH levels. |
Acids | 0-6.9/ sour taste/ often corrosive/ conduct electricity(electrolyte)/ used in pickling (removes impurities from metals)/ neutralizes base/ turns blue litmus paper red or pink/ reacts with some metals to produce hydrogen gas/ produces H+ ions. |
More for Acids | most acids have formulas that start with H/ Form hydroponic ions (H30+) when dissolved in water. |
Base | 7.1-14/ bitter taste/often corrosive/ conduct electricity/ feels slippery and slimy/neutralized acid/ turns red limtus paper blue/ produces OH- ions/ Produces hydroxide ions when bases mix with water./many bases formulas end in OH. |
Neutralization Reaction | Both substance lose their distinctive properties/ a salt and water are created/ a salt is an ionic compound that forms when a metal ion replaces the hydrogen ion of an acid |