Isotope - Study guides, Revision notes & Summaries

Station 1. You have run an experiment studying the effects of the molecular weight of a compound on the rate of diffusion in agar. Compound X has a molecular weight of 25.3 g/mol and compound Y has a molecular mass of 156.2 g/mol. On two separate agar plates, 0.1 g of each substance were transferred and allowed to diffuse for 2 hours. The results below were obtained. Use this information about this situation to answer the following three questions. 1. Question: (CO 1) What was the independent v...

The structural level of a protein not affected by disruption in hydrogen bonding is the: - Primary Which property of water allows a paper towel to pick up a puddle of water? - Adhesion Which functional group is critical for energy transfer in a cell? - Phosphate groups The tertiary structure of a protein is determined by: - Interactions between the side chains of the amino acids The smallest unit of life is - A cell Which trait is characteristic of ALL lipids? - They are hydrophobic If th...

The most common isotope of hydrogen has one proton, no neutrons, and one electron. An isotope of hydrogen with 1 neutron would have: - Answer- an atomic number of 1 and a mass number of 2 In a covalent bond: - Answer- electrons are shared between atoms so that all atoms have full outer shells A property of a system that is present at one level of organization but absent at the levels below is called: - Answer- an emergent property An ionic bond is - Answer- weaker than a covalent bond ...

AS LEVEL OCR CHEMISTRY EXAM QUESTIONS AND ANSWERS GRADED A+ Isotopes AS LEVEL OCR CHEMISTRY EXAM QUESTIONS AND ANSWERS GRADED A+ Isotopes AS LEVEL OCR CHEMISTRY EXAM QUESTIONS AND ANSWERS GRADED A+ Isotopes AS LEVEL OCR CHEMISTRY EXAM QUESTIONS AND ANSWERS GRADED A+ Isotopes AS LEVEL OCR CHEMISTRY EXAM QUESTIONS AND ANSWERS GRADED A+ Isotopes

1. You re conducting a study on the effects of carrot consumption on blood pressure. you will be giving carrots to participants in your study and monitoring their blood pressure over several months 2. Which of the following substances contain ionic bonds? 3. What is the name of the compound N 4. Which of the following species would you expect form intermolecular hydrogen bonds? 5. In an experiment you calculate that 6.50 gram of liquid has a volume of 2.50 ml…. What is the mass of a 160 l...

Straighterline Chemistry Final Exam (ACTUAL) What is the term used for findings that are summarized based on a pattern or trend? a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction - Answer a. Law Which of the following is a tentative explanation for a set of observations? Select one: a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction - Answer b. Hypothesis If a liquid contains 60% sugar and 40% water throughout its composition then what is it calle...

Phosphorus has an atomic number of 15. This tells us that... - Answer-there must be 15 protons True or False: covalent bonds are stronger than ionic and hydrogen bonds because atoms that are joined with covalent bonds share electrons - Answer-True An e- in a hydrogen atom exists in the first valence shell. The valence e- of Aluminum exist in the 3rd shell. Which valence shell e- have higher potential energy and why? - Answer-the valence e- of aluminum, bc higher e- shells have higher energy...

Option 1: While we often think of radiation as dangerous, radioactive isotopes are widely used in the field of healthcare as well as in many other fields. For your initial post, choose a radioactive isotope used in healthcare or another field and report on how your isotope is used. Be sure to answer both of the following questions as part of your initial post: a. What type(s) of radioactive decay does your isotope undergo? b. How is your isotope used? Use at least one outside source and ci...

Given the following table, which statement is true about atoms A and B? - Answer-A. A and B are isotopes of the same element How many protons and neutrons does iron-56 have? - Answer-D. 26 protons and 30 neutrons Which of the following is the correct for an isotope with 3 protons and 5 neutrons? - Answer-C. 8/3 Li Which of the following is the most stable isotope? - Answer-D. Plutonium-238 As the mass of the nucleus increases, what happens to the ratio of neutrons to protons in stable isot...

Electrostatics 1 1) Just as "gravity" is the study of a wide range of gravitational interactions, "electricity" is the study of a wide range of A) electrical charges. B) electrical forces. C) electrical interactions. D) none of the above 2) Electrostatics is a branch of electricity that focuses on A) electrical charge. B) electrical force. C) both of these when static. D) none of the above 3) The force that binds atoms together to form molecules is A) gravitational. B) nucl...