Multiple Choice
The sour taste of lemons is due to the presence of a compound called a(n) _____.
A) acid
B) base
C) salt
D) pH
Correct Answer:

Verified
Correct Answer:
Verified
Q4: Match the element name with its symbol.<br>-Mg<br>A)calcium<br>B)carbon<br>C)hydrogen<br>D)iron<br>E)oxygen<br>F)sodium<br>G)potassium<br>H)nitrogen<br>I)magnesium<br>J)phosphorus
Q5: Match the element name with its symbol.<br>-O<br>A)calcium<br>B)carbon<br>C)hydrogen<br>D)iron<br>E)oxygen<br>F)sodium<br>G)potassium<br>H)nitrogen<br>I)magnesium<br>J)phosphorus
Q6: Phospholipids are lipids that contain cholesterol.
Q7: The smallest particles of elements that enter
Q8: Match the element name with its symbol.<br>-Fe<br>A)calcium<br>B)carbon<br>C)hydrogen<br>D)iron<br>E)oxygen<br>F)sodium<br>G)potassium<br>H)nitrogen<br>I)magnesium<br>J)phosphorus
Q10: Which of the following would best be
Q11: The number of elements found naturally in
Q12: Match the element name with its symbol.<br>-Na<br>A)calcium<br>B)carbon<br>C)hydrogen<br>D)iron<br>E)oxygen<br>F)sodium<br>G)potassium<br>H)nitrogen<br>I)magnesium<br>J)phosphorus
Q13: Match the element name with its symbol.<br>-Ca<br>A)calcium<br>B)carbon<br>C)hydrogen<br>D)iron<br>E)oxygen<br>F)sodium<br>G)potassium<br>H)nitrogen<br>I)magnesium<br>J)phosphorus
Q14: Enzymes are specialized protein molecules found in