True/False Questions 1) The atomic weight is an average of the relative weights

Question

True/False Questions 1) The atomic weight is an average of the relative weights (mass numbers) of all the isotopes of an element 2) It is the difference in the R group that makes each amino acid chemically unique 3) Chemical properties are determined primarily by neutrons 4) A charged particle is generally called an ion or electrolyte. 5) Isotopes differ from each other only in the number of electrons the atom contains. 6) About 60% to 80% of the volume of most living cells consists of organic compounds. 7) Triglycerides are a poor source of stored energy 8) Omega-3 fatty acids appear to decrease the risk of heart disease. 9) Glucose is an example of a monosaccharide. 10) Glycogen, the storage form of glucose, is primarily stored in skeletal muscle and liver cells. 11) The lower the pH, the higher the hydrogen ion concentration. 12) Covalent bonds are generally less stable than ionic bonds. 13) Hydrogen bonds are too weak to bind atoms together to form molecules, but they do hold different parts of a single large molecule in a specific three-dimensional shape. Answer: TRUE 14) The fact that no chemical bonding occurs between the components of a mixture is the chief difference between mixtures and compounds. 15) The acidity of a solution reflects the concentration of free hydrogen ions in the solution.

Explanation / Answer

1 ) true

2 ) true

3 ) false

4 ) true

5 ) false

6 ) false

7 ) false

8 ) true

9 ) true

10 ) true

11 ) true

12 ) false

13 ) true

14 ) true

15 ) true

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