Microbiology With Diseases By Taxonomy (6th Edition)
6th Edition
ISBN: 9780134832302
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 1TMW
Electrons zip around the nucleus at about 5 million miles per hour. Why don’t they fly off?
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What if there are a different number of Neutrons?
Sometimes elements have a different number of neutrons than usual, so therefore have a different atomic mass. This is what we call an Isotope (a variant form of an element which has the same number of protons but a differing number of neutrons).
Sometimes we’ll see Isotopes labeled with their new mass like this:
14C = this is Carbon 14. Notice it has a different mass than what is on your periodic table
The average mass of all the isotopes is defined as an element’s Atomic Weight. Can you answer questions about these Isotopes?
ELEMENT
ATOMIC MASS
NUMBER OF PROTONS
NUMBER OF NEUTRONS
14C
A
B
C
15N
D
E
F
2H
G
H
I
Use your table to look up the number of protons, remember that never changes!
Sort the subatomic particles according to their masses.
Drag each subatomic particle into the correct bin.
electron
proton
neutron
mass of ~ 1 amu
mass of ~ 1/2000 amu
Albert Einstein’s equation for the conservation of matter and energy (E = mc2) predicts that if the mass of uranium to be split in a nuclear fission reaction were to double, then:
the amount of energy released would be decreased to one-fourth
the amount of energy released would be decreased to one-half
the amount of energy released would be increased four-fold
the amount of energy released would be increased two-fold
the amount of energy released would remain the same
Chapter 2 Solutions
Microbiology With Diseases By Taxonomy (6th Edition)
Ch. 2 - Electrons zip around the nucleus at about 5...Ch. 2 - Chlorine and potassium atoms form ionic bonds,...Ch. 2 - Why are decomposition reactions exothermic, that...Ch. 2 - Why does the neutralization of an acid by a base...Ch. 2 - Prob. 5TMWCh. 2 - Prob. 1CCSCh. 2 - Prob. 1MCCh. 2 - Prob. 2MCCh. 2 - Prob. 3MCCh. 2 - Prob. 4MC
Ch. 2 - Which of the following terms most correctly...Ch. 2 - Prob. 6MCCh. 2 - Prob. 7MCCh. 2 - Prob. 8MCCh. 2 - Prob. 9MCCh. 2 - Prob. 10MCCh. 2 - Prob. 1FIBCh. 2 - Prob. 2FIBCh. 2 - Prob. 3FIBCh. 2 - Prob. 4FIBCh. 2 - Prob. 5FIBCh. 2 - Prob. 6FIBCh. 2 - Reactions that release energy are called...Ch. 2 - Prob. 8FIBCh. 2 - Prob. 9FIBCh. 2 - Prob. 10FIBCh. 2 - Prob. 1VICh. 2 - Prob. 2VICh. 2 - Prob. 1SACh. 2 - Prob. 2SACh. 2 - Prob. 3SACh. 2 - Prob. 4SACh. 2 - Prob. 5SACh. 2 - Prob. 1CTCh. 2 - Prob. 2CTCh. 2 - Prob. 3CTCh. 2 - Prob. 4CTCh. 2 - Prob. 5CTCh. 2 - Prob. 6CTCh. 2 - Prob. 7CTCh. 2 - Prob. 8CTCh. 2 - Prob. 9CTCh. 2 - Prob. 10CTCh. 2 - Prob. 11CTCh. 2 - Prob. 12CTCh. 2 - Prob. 13CTCh. 2 - Prob. 14CTCh. 2 - A textbook states that only five nucleotide bases...Ch. 2 - Using the following terms, fill in the following...
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- Polonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. They can be stopped by, for example, a sheet of paper or a few inches of air. This property is one reason why authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of 210Po decay into after it emits an alpha particle?arrow_forwardFigure 2.3 How many neutrons do carbon-12 and carbon-13 have, respectively?arrow_forwardThe magnesium electron spectrum has a line at 266.8 nm. Does it have a greater speed in a vacuum (an area without an atom or particle) than does red light with a wavelength of 652 nm? Why or why not?arrow_forward
- An atomic nucleus can be described by the analogy “like a marble in the Dallas Cowboys Stadium.” If a marble represents the atomic nucleus, what does the stadium represent?arrow_forwardWhat may be the number of protons to number of neutrons ratio in our body? Explain Why?arrow_forwardAlchemists were medieval scholars and philosophers who were the forerunners of modern-day chemists. Many spent their lives trying to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never succeeded.arrow_forward
- Which of the following is not a fundamental subatomic particle that forms elements? Which of the following is not a fundamental subatomic particle that forms elements? electrons protons nucleus neutronsarrow_forwardPolonium is a rare element with 33 radioisotopes. The most common one, P210o, has 84 protons and 126 neutrons. When P210o decays, it emits an alpha particle, which is a helium nucleus 2 protons and 2 neutrons. P210o decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. For example, they can be stopped by a single sheet of paper or a few inches of air. That is one reason why authorities failed to discover toxic amounts of P210o in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of P210o change into after it emits an alpha particle.arrow_forwardAt the beginning of an experiment, a scientist has 268 grams of radioactive goo. After 180 minutes, her sample has decayed to 4.1875 grams.What is the half-life of the goo in minutes? Find a formula for G(t)G(t), the amount of goo remaining at time tt. How many grams of goo will remain after 32 minutes?arrow_forward
- Many spontaneous reactions occur very slowly. Whydon’t all spontaneous reactions occur instantly?arrow_forwardIf we removed a neutron from an atom, what would happen to the atom? Group of answer choices: a) its mass would change b) it would have a positive charge c) it would become a different element d) it would become polar e )it would have a negative chargearrow_forwardPart A Which of the following is NOTa subatomic particle? molecule O neutron proton electronarrow_forward
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