v1/v2 hesi chemistry 2023/2024 QUESTIONS AND CORRECT ANSWERS 100%

v1/v2 hesi chemistry 2023/2024 QUESTIONS AND CORRECT ANSWERS 100% +1 - ANSWER 1. If Hydrogen is in a compound, what would its oxidation number be? The same as the charge of the ion - ANSWER What is the oxidation number of any simple ion? 0.453592 kg - ANSWER How many kilograms are in a pound? 0 degrees Celsius - ANSWER What is the temperature for freezing point of water in Celsius? 5F=9C+160 (remember 5F because you have 5 fingers on a hand & 9C because cats have 9 lives) - ANSWER What is the conversion of Celsius to Fahrenheit? 0 - ANSWER What is the oxidation number of an element atom? Below 0C (pick and answer choice around -2C, actual temp depends on how much salt is in the water) - ANSWER What is the freezing point of sea water in Fahrenheit? 2 - ANSWER How many amino acids are in a dipeptide? -2 - ANSWER If Oxygen is in a compound, what would its oxidation number be? 2 because the lower the pH value, the more acidic - ANSWER Which of the following pH values would lemon juice likely have? A 5 carbon sugar (Pent = 5) (ose = sugar) - ANSWER What is a pentose? 6 (each H is +1, each O is -2. All charges have to add to 0. 2+S-8=0, so S=6) - ANSWER What is the oxidation state of the Sulfur atom in Sulfuric Acid H2SO4? 8 ( mass# - atomics # = neutrons) 14 - 6 = 8 - ANSWER How many neutrons does carbon 14 have? 19 (same as the atomic number) - ANSWER How many protons does Potassium have? 20 amino acids - ANSWER How many amino acids are essential for human life? 37°C - ANSWER Normal body temperature in °C? 98.6°F - ANSWER Normal body temperature in °F? 100°C - ANSWER Boiling point of water in °C? 212°F - ANSWER Boiling point of water in °F? -273°C - ANSWER 0°K is equal to ___°C? A substance that can act as both a base & acid - ANSWER The term Amphoteric means? Absolute zero - ANSWER What is Kelvin based around? Acid - ANSWER 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? Alloys - ANSWER Mixture of 2 or more metals are? · Formulas begin with H (Hydrogen) · Proton Donor - ANSWER Acids Alpha, Beta & Gamma - ANSWER 3 types of radiation in nuclear chemistry? . *Can be stopped by a piece of paper - ANSWER Alpha radiation: Amalgam - ANSWER Type of Alloy in which another metal is dissolved in Mercury (Hg)? Amino Acids - ANSWER Proteins are made up of? Animal Starch - ANSWER Glycogen is what kind of starch? Anions (negative ion) - ANSWER When an atom GAINS ONE or more electrons? Atom - ANSWER Basic building block of a molecule? Average mass of an elements isotope - ANSWER Atomic mass? # of protons in nucleus of an atom - ANSWER Atomic #: · A Hydrogen or proton ACCEPTOR & has hydroxide group in the makeup of the molecule · Produce -OH - ANSWER base Acids are Proton donors and Bases are proton acceptors - ANSWER Key note: · Can be stopped by aluminum foil - ANSWER Beta radiation: Study of substances & processes occurring in living things - ANSWER What is Biochemistry? Body temperature - ANSWER Fahrenheit is based off of? By ↑ areas of contact where chemical reactions can occur - ANSWER How does ↑ Surface area speed up chemical reactions? By reducing the amount of energy needed for a reaction to occur - ANSWER How do catalyst accelerate a chemical reaction? A Carboxyl group - ANSWER What does COOH symbolize? Catalyst - ANSWER Which of the following is not a solution type? Substance that speeds up a chemical reaction. - ANSWER Define Catalyst. Cations (positive ions) - ANSWER What is an atom called when it LOSES 1 or more electrons? The joining of atoms to form new substances. 2 types: ionic & covalent bonding - ANSWER What is chemical bonding? Electrical attraction between 2 oppositely charged atoms called ions - ANSWER What is an Ionic bond? Chemical bond that's formed when an atom transfers an electron to another atom. (steals) - ANSWER Ionic bonding? · Chemical bond that shares 1 electron pair · Formed by non-metals - ANSWER Single Covalent bond? Making & breaking of chemical bonds, leading to changes in composition of matter - ANSWER What are chemical reactions?