HESI A2 Chemistry practice covers atomic structure, chemical bonding, and basic reactions relevant to pharmacology and physiology.
The reaction 2C2H6 + 7O2 → 4CO2 + 6H2O has a ratio of 2 parts ethane (C2H6) to 7 parts oxygen (O2). How many parts of ethane (C2H6) will be needed to react with 21 parts of oxygen?
How could water be made to boil at room temperature?
Nora makes soup by adding some spices to a pot of boiling water and stirring until the spices are completely dissolved. Next, she adds several chopped vegetables. In this mixture, what is the solute?
For a given mass of gas at constant temperature, an inverse relationship exists between the volume and pressure of the gas. This describes which law?
Which of the following represents the general form of a decomposition reaction?
In a redox reaction, the element that is oxidized _____ an electron, and the element that is reduced _____ an electron.
The reaction in which silver nitrate and potassium chloride yield silver chloride and potassium nitrate is an example of which type of chemical reaction?
Which of the following is NOT a product of photosynthesis?
Why does increasing the surface area of reactants or catalysts increase the rate of a reaction?
Which of the following statements about atoms is FALSE?
How does photosynthesis contribute to the carbon cycle?
Once you're comfortable with chemistry, try a full HESI A2 practice test to see how it holds up under timed, mixed-section conditions, or head back to all HESI A2 categories.