workbook 0 Flashcards
(10 cards)
list 4 general safety rules
- wear safety glasses
- lab coat to protect clothing
- wash hands to protect from chemicals
- bench mat to protect the bench
what is an element
substances that are made up from only one type of atom
why are elements neutral
because there is an even balance of electrons and protons
what are valence electrons
electrons in the outermost shell of an atom
what is a ion
an atom that has gained or lost one or more valence electron to become stable and thus charged
describe an ionic compounds
and which one gains/ loses electrons
the transfer of electrons from a metal atom to a non-metal atom to form a stable ionic compound.
the metal will lose an electron to become positively charged and the non-metal will gain an electron to become negatively charged.
what is a molecule
2 or more nonmetals chemically combined. they share electrons to become stable
what is intramolecular bonding
bonds in between atoms in a molecule
what are the 3 types of intramolecular bonding
metallic, ionic, and covalent
what is intermolecular bonding
bonds between molecules
