atoms compounds etc Flashcards
(64 cards)
what kind of electrons are shared between elements in a compound
valance electrons
can you tell how many valence electrons a compound has
by their group number
what are diatomic elements
elements found in nature combine covalently
valence electrons are____to another Adam in the compound
transferred
when an Adam loses a proton it becomes what
electrical charge
when an Adam loses an electron what kind of charge is it
positive
what is an ion
an atom with one less electron are proton
what’s an atom
a positively charged core surrounded by a negatively charged region
what’s an electron
a negatively charged mass that surrounds a nucleus
what’s a proton
positively charged and make up the nucleus
what’s a neutron
no charge and make up nucleus along with the proton
what’s an element
a sustance made of atoms of the same # of protons
compound
a substance made of 2 or more elements
what’s an acid
any compound that produces hydrogen ions in a solution
what’s a base
any compound that produces hydroxide ions in solution
when does neutralization occur
this occurs when hydrogen ions from the acid combined with hydroxide ions from the base to form water
how do you neutralize a base
with
how do you neutralize the acid
with a base
acids and bases are said to be caustic what is this mean
this means they can damage both living and nonliving materials
what is pH
A our unit of measure that indicates h+ concentration
when does an indicator change color
where in pH goes above or beyond a certain value
what is 0 to 6 on the pH scale
and acid
what is 8 to 14 on the pH scale
A base
what is neutral on the pH scale
seven (water)
