phy sci test 10 (ch 13-14)

used in nuclear fusion to release a lot of energy

2 or more elements bonded together

2 or more atoms bonded together

between metal and nonmetal

sharing of valence electrons

valence are shared by all atoms; two metals bonding

breakup or change in the nucleus emitting radiation

releases energy without changing number of protons and neutrons

electrons emitted

eight electrons in outermost electron shell (valence electrons)

atoms of the same element that have different number of neutrons

doesn’t completely mix together

same physical properties throughout

being dissolved

(water) dissolved into

homogeneous mixture

shows electrons surrounding the nucleus in circles

electron as dots surrounding the nucleus

shows electron wave around nucleus

negative charge

positive charge

atoms with no charge

study of interactions of matter

column; arranged by same number of valence electrons

a row on periodic table

it's impossible to know both the position and velocity of an electron at the same time

located on outermost electron shell

represents elements

positive charge ion

negative charge ion

solids with characteristics between nonmetals and metals

group 1; very soft, shiny metals

group 17; “salt formers”

between groups 3 and 4 (under table); radioactive

hard, dense, shiny solids

group 18; found in their pure states in nature

poor conductors of electricity; gasses and liquids

groups 3-12; strength and durability

consists of tiny particles (atoms)

composed of a single type of atom

discovery of elements, atomic theory

combining two nucleus to form heavier nucleus

atom splits into smaller atoms; “division”

“domino effect” of nuclear fission