1
Matter has mass and takes up space
What is true
this part of an atom has no electrical charge
what is a neutron
this is produced when electrons move to a lower orbit and emit energy
what is light
this force accurse when objects have like charges
what is repulsion
matter exists only as solid or liquids
what is false
this type of material does not allow electricity to pass through it, such as wood
what is an insulator
when rubbed with silk, this material becomes positively charged
what is glass
this is what flows to create electrical current
what are electrons
this determines an elements atomic number and is found in the nucleus
what are protons
this part of atom carries negative charge
what is an electron
this is the most common method used to produce electricity
what is magnetism
alternating current is described as
what is bidirectional
according to basic physics, like charges do this, while opposite charges do the opposite
what is repel and attract
the valence shell of an atom is located were
what is the outer shell
this is not one of the six basic methods for producing electricity
what is air
an insulator is a material containing how many valence electrons
what is seven or eight
which theory states that current flow is produced when an electron from one atom knocks electrons of another atom out of orbit
what is bump theory
if an atom containing two valence electrons is struck by a moving electron, what happens to the energy of the striking electron
what is divided between the two valence electrons
what are the tree principle parts of an atom
what is electron, neutron, and proton
this material is an insulation and most common material used in the production of electronic components
what is silicon
a conductor is made from material that contains between how many valence electrons
what is one and three
a model states that electrons exist in specific orbits around the nucleus and the orbit in which the electron exists is determined by the electrons mass times its speed times radius of the orbit
what is Bohr model
which of the following contains four valence electrons and is characterized by the fact that as it is heated, its resistance decreases
what is semiconductor
what is the maximum number of valence electrons in an atom
what is eight (8)
this term was used by William Gilbert for materials that can be charged
what are electrics