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phys 2&3 cont
Question | Answer |
---|---|
Conduction | The transfer of heat through a material by touching. |
Convection | The mechanical transfer of hot molecules in a gas or liquid from one place to another. |
Infrared | Transfered heat by radiation |
Ionic Bonding | Bonding that occurs because of an electrostatic force between ions |
Covalent Bonding | A chemical union between atoms formed by sharing one or more pairs of electrons |
Centripetal Force | Force that keeps an electron in orbit |
Centrifugal Force | Force that causes an electron to travel straight and leave the atom. |
Difference between Atomic Mass & Atomic Number | Atomic Mass is the number of combined protons and neutrons Atomic Number is the total number of neutrons |
Meaning of the Group Number in the PT of Elements | The group number is an identifier used to describe the column of the standard periodic table in which the element appears |
Scalar Quantity | quantity or measurement that only has magnitude |
Vector Quantity | Quantity or measurement that has magnitude, unit, and direction |
State the units of Mass, Length, Energy, Work and Time in the SI | mass-kilogram length-meter time-seconds work-Joules energy-Joules |
Describe the charge & mass of an electron | A negative charge (-1) and the mass of 9.109 x 10^-31 kg |
Define Isotope | Atoms that have the same atomic number but different atomic mass numbers |