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science final

Terms

undefined, object
copy deck
you put an ice cube into a beaker,heat it until it is a liquid then turn it into steam this is an example of what kind of change?
physical
the particles with NO CHARGE in the nucleus are called?
nuetrons
lsrger number
nuetrons
how many VALENCE electrons does an atom hacve if it has 14 electrons?
14
which subatomic paticle is moved to another atom when they bond?
electons
using the lose/gain, what do the NOBLE GASES do with its valence electrons?
nothing
a__ is when atoms attract to each other
bond
an ion that has more protons than electrons is what charge?
positive
the atomic number always represents the number of__ in an atom
protons
particles that make up matter are called___ and ___
atoms and molecules
iron, lettuce salad, sugar, or kool-aid is an example of an element?
sugar
the letter that represents an elements name is a ?
CHEMICAL SYMBOL
elements in the Be family have how many valence electrons?
2
burning matches is what type of change?
chemical
the POSITIVE charge particles found in the nucleus are the __
protons
ana tom of coppper has a mass number of 92 another atom of cu has a mass number of 96. cu 96 has 4 more__
prontons
elements in the carbon family canf rom many compounds bc?
they can lose or gain electrons
the atomic mass of atom is represented by the number of__ plus ___ in an atom
prontons and nuetrons
2 or more elements chemically combined is an exmple of a...?
compound
if an atom has 16 prtontons and 18 electrons and another has 30 protons and 28 electrons what will their resulting electrical properties cause them to do?
attract
the FIRST family of elements will do what with its valence electrons?
lose
a piece of fruit like an apple that turns brown fets mushy and smelly is an example of what kinda of change?
chemical change
removing an electron from a neutral atom makes an atom with a ___charge.
positive
___ have the same atomic number but different stomic mass?
isotopes
what is the electron arrangement for an atom with 15 electrons?
2/8/5
which would be the MOST soluble in a liquid like water? sand,silver foil,beads,or salt?
salt
what is the maximum number of electrons found in the first four shells?
2/4/18/3/2
when matter changes into a NEW SUBSTANCE with new properties it is considered a__ change
chemical
adding an elelctron to a neutral atom produces an atom with a __charge.
negative
always smaller number?
protons
these atoms with an electrical charge are called
ions
the subatomic particles found in the nucleus of an atom are__ and __
prontons and nuetrons
oxygen,water,kool-aid,or sand is an example of a homogeneous mixture.
kool-aid

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