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Mastering Biology Chapter 2 Questions with Solutions 2024
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Mastering Biology Chapter 2
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Mastering Biology Chapter 2A substance that cannot be broken down into other substances by ordinary chemical
procedures is a(n) _____. - answer element
Proton - answer+1 charge
symbol p
Neutron - answer0 charge
symbol n
Electron - answer-1 charge
symbol e
Mass of ~1amu - answer proton
neutron
mass of ~1/2000 amu - answer electron
What is the mass number of an ion with 104 electrons, 158 neutrons, and a +1 charge?
- answer263
The innermost electron shell of an atom can hold up to _____ electrons. - answer2
Which of these relationships is true of an uncharged atom? - answerThe number of
protons is equal to the number of electrons.
What determines the types of chemical reactions that an atom participates in? -
answerthe number of electrons in the outermost electron shell
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- answer6
Which of these refers to atoms with the same atomic number but different atomic
masses? - answerThese atoms are isotopes.
Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does
fluorine have? - answer10
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many protons does boron have? - answer5
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