Question

question 19 1 pts the most abundant element essential to life is carbon. oxygen. hydrogen. nitrogen. question 20 1 pts ionic bonds are chemical bonds formed by the: sharing of electrons between molecules. donation of protons from one atom to another. transfer of electrons from one atom to another. acceptance of neutrons from one atom by another. question 21 1 pts salts: can form as the result of a chemical reaction between acids and bases. are electrolytes. will form crystals if the water is removed. all of the above are correct.

Explanation:

• Question 19: Oxygen is the most abundant element essential to life as it is a major component of water and is used in cellular respiration.
• Question 20: Ionic bonds are formed by the transfer of electrons from one atom to another, creating ions that are attracted to each other.
• Question 21: Salts can form from acid - base reactions, are electrolytes (they conduct electricity when dissolved), and will form crystals when water is removed.

Answer:

Question 19: B. oxygen
Question 20: C. transfer of electrons from one atom to another
Question 21: E. All of the above are correct