chemistry Flashcards
what are isotopes
isotopes are atoms of the same element that have the same number of protons but a different neutrons
state the term ionic bond
when two oppositely charged particles are attracted to each other by electrostatic attraction
state the type of bonding in graphite
covalent bonding
whats an alloy
an alloy is a mixture of two or more elements where at least one is metal
define proton number
its the number of protons in an atoms nucleus which determines the element
state one industrial use of radioactive isotopes
for research like carbon-14
whats an atom
.
the smallest particle of a chemical element
whats a compund
A compound is a substance formed when two or more different elements chemically combine
whats an element
An element is a pure substance made of only one type of atom, defined by its number of protons.
whats an ION
a charged atom
what is the centre of an atom called
A nucleus
what is the charge on an electron
negative
which of the three sub-atomic particles is the lightest
electrons
what is the atomic number of an atom equal to
The atomic number of an atom is equal to the number of protons in the nucleus of that atom
where are the electrons inside an atom located
they are in the outer shell