Lecture 2

Question 1

What are protons and neutrons made of

Answer 1

Quarks

Question 2

How is electrical stability maintained

Answer 2

Equal number of protons and electrons

Question 3

Atomic number is

Answer 3

Defined by number of protons

Question 4

Atomic mass

Answer 4

Mass of proton and neutrons combined

Question 5

Smallest particle of a compound possessing characteristics of the compound

Answer 5

Molecule

Question 6

Electromagnetic energy

Answer 6

Combination of electric and magnetic fields traveling through space

Question 7

Unit for wavelength

Answer 7

Angstrom

Question 8

Unit for frequency

Answer 8

Cycles per second hz

Question 9

Equation for wave

Answer 9

V=frequency x wavelength

Question 10

Unit for charge

Answer 10

Coulomb

Question 11

Electrification can be created by

Answer 11

Friction, contact and induction

Question 12

First law of electrostatics

Answer 12

Like charges repel, opposite attract

Question 13

Second Law of electrostatics

Answer 13

Coulomb law, inverse square law

Question 14

Third law of electrostatics

Answer 14

Charge is evenly distributed around surface

Question 15

4th law of electrostatics

Answer 15

Charge centers around part of greatest curvature

Question 16

Conduction

Answer 16

Transfer of heat through solid matter from a high temperature by molecular motion

Question 17

Convection

Answer 17

Transfer of hot molecules in a gas or liquid

Question 18

Thermal radiation

Answer 18

Method of transfer of heat through space where no matter exists at all and depends on the temperature of the object

Question 19

Rate of change of the position of an object with time or the rate of motion

Answer 19

Velocity

Question 20

Heat

Answer 20

Form of energy the kinetic energy of the random disordered motion of molecules. SI unit is calorie