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Chapter 2 Part 1

QuestionAnswer
What are the 4 main elements that comprise about 96% of the human body? oxygen, Carbon, Hydrogen and Nitrogen
How to distinguish between an inorganic and organic compound? Organic compound always contain carbon and inorganic compound does not contain carbon.
What is the most abundant chemical in the human body comprising about 60-80% by volume? Water
What are the important properties of water? High heat capacity, high heat of vaporization , Polar solvent properties. Reactivity Cushioning
What type of chemical reaction involves adding water to break things apart? Hydrolysis
What type of chemical reaction involves remove water to put things together? Dehydration
What is an ionic compound called that does not contain H+ or OH-? Salts
What is an ionic compound that releases H+ (donates a proton) and they often have a sour taste? Acids
What is the pH range of an acid? 0-6.99
What is an ionic compound that releases OH- (accepts a proton) and they often have a bitter taste and feel slippery? Base
What is the pH range of a base? 7.01-14
What is considered to be a neutral pH? 7.00
What substance has a neutral pH? distilled water.
What does pH measure and how does its number system relate to concentration? pH measures the concentration of hydrogen ions(H+)in a solution, with a lower pH value indicating a higher concentration of hydrogen ions and therefore a more acidic solution.
A _______is a solution that helps maintain a stable pH level when small amounts of acids or bases are added buffers
Created by: user-1862379
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