HESI Chemistry Practice Test 2

Antacids react with HCl in the stomach to help alleviate heartburn in what type of reaction?

Which of these formulas is most likely for a compound formed from magnesium with an oxidation number of +2 and chlorine with an oxidation number of -1?

a. MgCl

b. Mg₂Cl₂

c. MgCl₂

d. Mg₂Cl

Please answer the following question

In the reaction 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O, which element is reduced?

Which of the following is true about a biological catalyst?

What percent of the original grams of unstable, radioactive substance Y, which has a half-life of 5 minutes, will remain after 20 minutes?

A mixture of four elements that has a uniform density throughout would be classified as which of these?

What is the name for the process by which the liver can make glucose from proteins, components of fats, and other noncarbohydrate sources?

If potassium has an atomic number of 19 and an atomic mass of 39, how many total electrons does it have?

On a phase diagram, the place where the solid, liquid, and gas phases of a substance coexist is referred to as what?

Which of the following is NOT an example of a physical property?