2nd Semester - Lesson 1-3 Flashcards
The smallest unit of matter that retains all of the chemical properties of an elements.
Atom
Atoms combine to form these.
Molecules
The three atomic particles:?
protons, electrons, and neutrons
What contains the protons and neutrons?
nucleus of the atom
The outermost regions of the atom that contains the electrons.
electron shells
An imbalance of electric charges within or on the surface of a material or between materials. The charge remains until it is able to move away by means of electric current or electrical discharge.
Static electricity
What physical quantity explains the effects of static electricity?
Electric charge
Two types of charge:
positive and negative
This means gaining or losing an electron.
Charging
Types of charging
friction, contact, induction
When you rub one material to another, they are charged by _. Materials losing electron is positively charged and material gaining electron is negatively charged.
Charging by friction
This must actually touch the electrosope to transfer charge to form it.
Charging by contact
It is not necessary to transfer excess charge directly to an object to charge it.
Charging by Induction
A method of _ whereina charge is created in anearby object, without direct contact.
Induction
The separation of charges in an obect that remains neutral.
Polarization
Typically expressed using the unit Newton. Being a force, the strength of the electrical interaction is a vector quantity that has both magnitude and direction.
Electrical force
The quantitative expression for the effect of these variables on electric force. States that the electrical force between two charged objects is directly proportional to the product of the quantity of charge in the oects.
Coulumb’s law
The symbol k is a proportionality constant known as
Coulumb’s law constant
The directionn of this force can be represented by imaginary lines. These imaginary lines are caled?
Electric lines of force
Electric lines of force are also called?
Electric field lines
The concept of Electric lines of force was introduced by him in 1837.
Michael Faraday
A charge so small that the force it exerts does not significantly alter the distribution of other charges that are nearby.
Test charge
