HESI A2 NEW FILE TESTED CHEMISTRY -2023

HESI A2 NEW FILE TESTED CHEMISTRY -2023 1. A compound that is a Hydrogen or proton donor, corrosive to metals, causes blue litmus paper to become red and becomes less acidic when mixed with a base is? Acid 2. Mixture of 2 or more metals are? Alloys 3. Acids: Atomic #: # of protons in nucleus of an atom 4. Base? A Hydrogen or proton ACCEPTOR & has hydroxide group in the makeup of the molecule pH less than 7.0 sour/tart 5. 3 types of radiation in nuclear chemistry? Alpha, Beta & Gamma 6. Alpha radiation: * Emission of Helium (He) ions in the nuclei * Contains 2 protons & 2 neutrons. * +2 Charge * Largest radiation particle. * Can be stopped by piece of paper 7. Type of Alloy in which another metal is dissolved in Mercury (Hg)? Amalgam 8. Proteins are made up of? Amino Acids 9. Glycogen is what kind of starch? Animal Starch 11. Basic building block of a molecule? Atom (NOT CELL!!) 12. Atomic mass? Average mass of an elements isotope -OH -OH 13What is created when an electron pair in a covalent bond is shared unequally? Dipole 14. Beta radiation: - charged electrons or + charged positrons luminum foil 15. What is Biochemistry? Study ofsubstances & processes occurring in living things 16. Fahrenheit is based off of? Body temperature 17. How does ↑ Surface area speed up chemical reactions? By ↑ areas of contact where chemical reactions can occur 18. How do catalyst accelerate a chemical reaction? By reducing the amount of energy needed for a reaction to occur 19. What does COOH symbolize? A Carboxyl group 20. Which of the following is not a solution type? Catalyst 21. Define Catalyst. Substance that speeds up a chemical reaction. 22. What is an atom called when it LOSES 1 or more electrons? Cations 23. Which change of matter is when no change is made to the chemical composition of a substance? Physical 24. Simplest substance and is represented by a letter or letters? Element 25. Law that states matter can neither be created nor destroyed during a chemical reaction? Law of conservation of mass 26. What are all metric measurements composed of? A. Metric prefix and a basic unit of measure 27. To balance an equation, what are placed in front of each component? Coefficient 28. Dispersions forces are found in which covalent bond? Non-polar 29. The weakest of all intermolecular forces? Dispersion forces 30. Polarity is? Based on the difference in electronegativity values for the elements involved