chemical reactions Flashcards
what properties do compounds have
different properties from the elements they contain
what are ions
charged particles that form when atoms (clusters of atoms) loose or gain electrons
chemical bonds involve electrons from
the reacting atoms
what do compounds formed from metals and non metals consist of
ions
what happened to metals when it reacts with non metals
loose electrons to form positively charged ions
what happened to non metals when it reacts with metals
gains electrons to form negatively charged ions
what is the ionic bond
force of attraction between the oppositely charged ions
between metal and non metal
what do compounds formed from non metals consist of
molecules
what joins atoms in a molecule
covalent bonds
when do covalent bonds form
when atoms share pairs of electrons
between non metals
what are compounds
when element atoms join with other element atoms using chemical bonds
eg iron sulphate
involves transferring/sharing of electrons
what does the chemical formula show
how many of each type of atom join together to make the units which make up the compound
what do balanced symbol equations show
what happens to different atoms in reactions
what are things on the left side of word equation arrow called
the reactants
what are things on the right side of word equation arrow called
product
