Isotope - Study guides, Class notes & Summaries

An element has 8 protons, 9 neutrons, and 8 electrons. What are its atomic number and mass? - 8 and 17 How many and what type of bonds does sulfur usually form in biology? - 2 covalent A molecule that has all non polar covalent bonds would be________. - hydrophobic What substance makes up the interior of a potato tuber? - starch What is an example of a lipid? - triglyceride One characteristic shared by sucrose, lactose, and maltose is that __________. -they are all dissacharides The over...

This document contains the essential reading for the Medical uses of Radioisotopes SAQs and TAQs.

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...

This document contains the questions for the Medical uses of Radioisotopes TAQ document.

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

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...

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...

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 ...

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...

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