c3 Flashcards
can we lose or make atoms in a chemical reaction conservation of mass
no we can not
how are ionic compounds made
when metals react with non metals
formula of ionic compound
in an ionic compound the charges have to cancel out to leave a charge go zero
what does a capital letter tells us on a compound
an new element
what is an isotope
forms of an element that have the same number of protons but different numbers of neutrons.
what is relative formula mass
ia the sum of relative formula masses of the atomc
does relative formula mass have units
no
does relative formula mass involve small numbers
yes
what’s the sigh for relative formula mass
mr
what do scientist called the starting meterials in a chemical reaction
what are the products in a chemicals reactions
the chemicals that are formed In a reactions
