Question

true/false
indicate whether the statement is true or false.

1. the number of protons in an atom equals the atomic number for that element.
2. water is the single most abundant inorganic compound in the human body.
3. disruption of the hydrogen bonds of functional proteins leads to their denaturation.
4. the lower the ph, the greater the number of hydrogen ions.
5. the four most common elements in the human body, in order of descending quantity, are hydrogen, carbon, oxygen, and nitrogen.
6. every atom in a molecule has a full valence shell.
7. carbon is found in all inorganic compounds.

Explanation:

• 29. By definition, the atomic number of an element is the number of protons in its atom.
• 30. Water makes up a large - portion of the human body and is the most abundant inorganic compound.
• 31. Hydrogen bonds are crucial for the structure of functional proteins, and their disruption causes denaturation.
• 32. pH is defined as the negative logarithm of the hydrogen - ion concentration, so lower pH means more hydrogen ions.
• 33. The four most common elements in the human body in descending order are oxygen, carbon, hydrogen, and nitrogen.
• 34. Not all atoms in a molecule have a full valence shell; many molecules are formed by atoms sharing or transferring electrons to achieve a more stable state.
• 35. Inorganic compounds generally do not contain carbon (with some exceptions like carbonates), while organic compounds are characterized by the presence of carbon.

Answer:

1. True
2. True
3. True
4. True
5. False
6. False
7. False