workbook 0 Flashcards
(10 cards)
list 4 general safety rules
- wear safety glasses
- wear a lab coat
- 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 (cannot be seperated further)
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 an ion
an atom that has gained or lost one or more valence electrons to become stable
*a charged particle
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 intramolecular bonding
bonds between molecules
