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Mastering Biology Assignment 1 Questions and Answers 100% Solved

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  • Mastering Biology

Mastering Biology Assignment 1

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  • October 25, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Mastering Biology
  • Mastering Biology
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Mastering Biology Assignment 1

A substance that cannot be broken down into other substances by ordinary chemical
procedures - answer Element

What is a trace element required by most living organisms? - answer Magnesium

A chemical element required only in minute amounts by living organisms for normal
growth. - answer Trace Element

Proton - answer-Symbol "p"
-Charge (+1)

Neutron - answer-Symbol "n"
-Charge (0)

Electron - answer-Symbol "e-"
-Charge (-1)

Which of the three subatomic particles (protons, neutrons, electrons) has the smallest
mass? - answerElectron

Has an approximate mass of ~1amu - answerProton, Neutron

Has an approximate mass of ~1/2000 amu - answerElectron

The innermost electron shell of an atom can hold up to how many electrons? - answer2

What relationship between subatomic particles 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? -
answerNumber of electrons in the outermost electron shell

Changing the number of _____ would change an atom into an atom of a different
element. - answerProtons

The atoms of different phosphorus isotopes _____. - answerIsotopes

Each of two or more forms of the same element that contain equal numbers of protons
but different numbers of neutrons in their nuclei, and hence differ in relative atomic

, mass but not in chemical properties; in particular, a radioactive form of an element. -
answerIsotope

What determines the type of bonding and the numbers of covalent bonds an atom can
form with other atoms? - answerNumber of unpaired electrons in the outer valence shell

In what way are elements in the same column of the periodic table the same? -
answerThey have the same number of electrons in their valence shells when neutral

The atomic number of nitrogen is 7. Nitrogen-15 has a greater mass number than
nitrogen-14 because the atomic nucleus of nitrogen-15 contains _____. - answer8
neutrons

What correctly describes a reaction that has reached chemical equilibrium? -
answerThe rate of the forward reaction is equal to the rate of the reverse reaction.

What type of bond is joins two hydrogen atoms? - answerCovalent

Covalent Bond - answerA chemical bond in which two atoms share one or more pairs of
valence electrons.

Molecule - answerTwo or more atoms held together by covalent bonds.

What kind of bond bonds two Oxygen atoms together - answerDouble Covalent Bond

What correctly describes the nature of the bonding of H2O? - answerOxygen is more
electronegative than hydrogen, making it negatively charged while the two hydrogen
atoms carry partial positive charges

What type of bond joins a carbon atom to 4 hydrogen atoms? - answerSingle Nonpolar
Covalent Bond

Ionic Bond - answerA chemical bond resulting from the attraction between atoms that
have acquired a charge due to losing or gaining one or more electrons.

When is Chemical Equilibrium reached? - answerThe forward and reverse reactions
occur at the same rate so that the concentrations of reactants and products remain the
samwe

What attracts water molecules to one another? - answerHydrogen Bonds

About twenty-five of the ninety-two natural elements are known to be essential to life.
Which four of these twenty-five elements make up approximately 96 percent of living
matter? - answerCarbon, Hydrogen, Nitrogen, and Oxygen

How are atoms described? - answerBy atomic number and a mass number

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