Putting Atoms Together (7.1) ELEMENTS Consist of only _______ kind of _______ Cannot be broken down into a simpler type of matter by The atoms of the The molecules of either physical or chemical element helium, the element means He nitrogen, N2 Can exist as either ___________ (eg. helium) or _____________ (eg., nitrogen). Molecules Can consist of 2 or more atoms of the: a) Same element (molecular ____________________) (eg. N2) b) Different elements (molecular _____________________) (eg. H2O) Diatomic Elements Diatomic elements are more stable when joined in a _______________ There are seven elements that form molecules consisting of ___________ atoms. (H O Br F I N Cl) COMPOUNDS Consist of atoms of two or more _______________ elements bonded together Can be broken down into a simpler type of matter (elements) by chemical means (but not by physical means) Have properties that are different from the The molecules of the component elements compound water Always contain the same _____________ of component atoms (constant composition). Chemical Formula
Putting Atoms Together (7.1) ELEMENTS Consist of only _______ kind of _______ Cannot be broken down into a simpler type of matter by either physical or chemical means Can exist as either ___________ (eg. helium) or _____________ (eg., nitrogen). The atoms of the element helium, He The molecules of the element nitrogen, N2 Molecules Can consist of 2 or more atoms of the: a) Same element (molecular ____________________) (eg. N2) b) Different elements (molecular _____________________) (eg. H2O) Diatomic Elements Diatomic elements are more stable when joined in a _______________ There are seven elements that form molecules consisting of ___________ atoms. (H O Br F I N Cl) COMPOUNDS Consist of atoms of two or more _______________ elements bonded together Can be broken down into a simpler type of matter (elements) by chemical means (but not by physical means) Have properties that are different from the component elements Always contain the same _____________ of component atoms (constant composition). The molecules of the compound water Chemical Formula
7.1_putting_atoms_together_note.docx