Which elements combine by forming an ionic bond

A) Sodium and potassium

B) Sodium and oxygen

C) carbon and oxygen

D) Carbon and sulfur

According to the Arrhenius concept, if NaOH were dissolved in water, it would act as A) a base. B) an acid. C) a source of hydronium ions. D) a source of H - ions. E) a proton donor.

What is the function of a carbohydrate in your body?

Determine the number of ions produced in the dissociation of the compound listed. CaO

Which of the following is not a physical change? a. freezing ice b. molding clay c. filtering a mixture d. cooking a steak

When an atom that has no charge loses two electrons, it becomes a 1. positive ion. 2. negative ion. 3. positive isotope. 4. negative isotope.

Our body solution tests at a pH of about 6.8. This pH is:

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?