Nucleus Questions and Answers

What is common in all nuclear reactions? They always share or transfer electrons. They always release energy. They always require energy. They always form a new element

In Einstein's famous mass-energy equivalence equation, what does c represent? speed of light mass deficit the photon nuclear charge

What is lost from the nucleus of an atom when it emits an alpha particle? two protons only two neutrons only two protons and two neutrons two protons and two electrons

What is the missing product from the fusion of hydrogen? 11H+11H→________+01e Select one: ²1H 22H 32He 31H

What is lost from the nucleus of an atom when it emits an alpha particle? Select one: O two protons and two neutrons O two neutrons only O two protons and two electrons O two protons only

3. For each example below, predict if the bonding will be ionic or covalent. i. Ca with Cl ii. C with H iii. Carbon monoxide iv. KBr v. SO₂ vi. Magnesium iodide

What is the rest energy of a hydrogen atom whose atomic mass is 2.014101778? (mproton=1.0078251, mneutron = 1.0086649, c2=931.5 eV/u) 940 eV 1879 eV 1876 eV 939 eV

There are 2 naturally occurring isotopes of Lithium: Li (6.015 amu) and 'Li (7.016 amu). What are the abundances of each isotope?

5.) Compare the three levels of energy of the alpha particle for gold. Give your best explanation why there were different interactions between the alpha particle and the nucleus.

6.) Did the paths for the Calcium atom with max, halfway and min alpha particles exhibit the same changes as the gold atom?

4. Which of the following can be used to describe the process of nuclear fission? Check all that apply. a chain reaction occurs to sustain the reaction it results in smaller still radioactive nuclei it takes only one neutron to start a reaction it takes place at relatively cool temperatures

Which of the following can be used to describe the process of nuclear fusion? Check all that apply. it takes place at relatively cool temperatures it results in larger nuclei than the parent it takes place at relatively high temperatures it is the opposite of nuclear fission

Which of the following atomic equations are accurate? (select all that apply) A=X+N N=Z-A A = Z+N Z = A + X

15. Which scientist was awarded the Nobel Prize for his work with quantized energy? Heisenberg Bohr Planck Oppenheimer

Calculate the nuclear diameter of 238 U. Express your answer to two significant figures and include the appropriate units.

If an electron in hydrogen atom jumps from 3 to an orbit of level an orbit of level n n = 2, emitted radiation has a frequency______ (R=Rydberg's constant, C-velocity of light). (A)3RC/27 (B)RC/25 (C)8RC/9 (D)5RC