NAME

Question Types


Start With


Question Limit

of 34 available terms

Advertisement Upgrade to remove ads

5 Written Questions

5 Matching Questions

  1. What is a buffer?
  2. What does the pH scale measure?
  3. A hydrophilic molecule dissolved in....
  4. What is the difference between an electrolyte and a nonelectrolyte?
  5. An ionic bond forms when? A covalent bond forms when?
  1. a Ionic: ions with opposite electrical charges attract
    Covalent: a chemical bond between atoms that share electrons.
  2. b they are chemicals that resist pH change. They combine with hydrogen ions when these ions are in excess or they donate hydrogen ions when these ions are depleted.
  3. c Electrolyte: substance that ionizes in a water solution
    Nonelectrolyte: organic compounds that dissolve in water, usually do not release ions.
  4. d tracks the number of decimal places in a hydrogen ion concentration without writing them out.
  5. e Water

5 Multiple Choice Questions

  1. Acid: substance that releases hydrogen ion
    Base: substance that release ions that can combine with hydrogen ions
    Salt: substance formed by the reaction between and acid and a base.
  2. Simple: sugars include monosaccharaides, disaccharides; straight chains or rings.
    Complex: polysaccharides are built of simple carbohydrates made of many bonded glucose molecules chains of sugars, cant digest.
  3. All matter is composed of fundamental substances.
  4. Because body functions result from cellular functions that in turn, result form chemical change
  5. The number of protons equals the number of electrons.

5 True/False Questions

  1. Which elements are most common in the human body?DNA: molecules store the information for protein synthesis.
    RNA: molecules use this information to construct specific protein molecules.

          

  2. Explain why some atoms are chemically inert.Synthesis: when 2 or more atoms, ions, or molecules bond to form a more complex structure A+B->AB
    Decomposition: bonds of a reactant molecule break to form simpler molecules, atoms, or ions AB->A+B
    Exchange: parts of 2 different types of molecular trade positions as bonds are broken and new are formed AB + CD-> AD+ BC
    Reversible: product or products can change back to reactant or reactants A+B<-> AB

          

  3. What is likely to happen to a protein molecule exposed to intense heat or radiation?All proteins have a special shape and their shape determines what function they will perform. Proteins can become denatured or their shape can change and it'll cause the loss of function. Proteins exposed to heat will most likely become denatured and lose the ability to perform their task.

          

  4. List 3 main types of lipids found in cells.Synthesis: when 2 or more atoms, ions, or molecules bond to form a more complex structure A+B->AB
    Decomposition: bonds of a reactant molecule break to form simpler molecules, atoms, or ions AB->A+B
    Exchange: parts of 2 different types of molecular trade positions as bonds are broken and new are formed AB + CD-> AD+ BC
    Reversible: product or products can change back to reactant or reactants A+B<-> AB

          

  5. Distinguish between a molecule and a compound.Ions: atom or molecule with an electrical charge.
    Polar: molecule in which the electrons and protons are not distributed symmetrically.

          

Create Set