Flashcards
Material Science
Flashcards do conjunto (20)
- 1Charge & weight of ElectronCharge -1.6x10^-19 C
Weight 9.11x10^-31 kg - 2Charge & weight of ProtonCharge 1.6x10^-19 C
Weight 1.67x10^-27 kg - 3Charge & weight of NeutronCharge Neutral
Weight 1.67x10^-27 kg - 4Number of protons in the nucleusAtomic Number (Z)
- 5Sum of the masses of protons and neutrons in the nucleusAtomic Mass (A)
- 6Most common isotopeCarbon
- 7Atomic Model Simple, has electrons revolving around the nucleus in discrete orbital shellsBohr atomic model
- 8Atomic Model Considers the electron to have wave-like and particle-like particlesWave mechanical model
- 9Elements that are capable of giving up a few of their valence electrons to become positively charged ionsElectropositive elements
- 10Elements that accept electrons to form negatively charged ions, or sometimes share their electrons with other atomsElectronegative elements
- 11The minimum amount of energy that would be required to separate the two atomsBonding energy
- 12Found in compounds composed of metallic and non-metallic elements, elements situated at the horizontal extremities of the tableIonic bonding
- 13Atoms of metallic element _______ their valence electron to the non-metallic elementgive up
- 14Attractive bonding forces are _________coulombic
- 15Ionic bonding is ____________, magnitude of bond is uniform in all directions around an ionnon-directional
- 16Sharing of electrons between two adjacent atomsCovalent bonding
- 17Covalent bond is ____________, it is between specific atoms and may exist only in the direction between one atom and another that participates in the electron sharingdirectional
- 18Bonding found in metals and alloysMetallic bonding
- 19Free electrons form an ___________electron cloud
- 20The non-valence electrons and nuclei form what are called ____________, which posses a positive charge equal in magnitude to the total valence electron charge per atomion cores
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- FlashCards sobre Material Science, criado por Gian Pusung em 15-02-2015.
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- Gian Pusung
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