Question | Answer |
law of conversion notes | states that no matter can be created or destroyed, only changed from one form to another |
physical change | change in an object's appearance or size |
chemical change | change in an object's composition |
element | substance that cannot be broken down into simpler elements |
chemical formula | way of writing down the properties of a molecule |
element (diatomic) molecule | molecules composed only of two atoms |
compound molecule | molecules with more than one different elements in it |
chemical equation | represents a chemical reaction and its outcomes |
chemical reaction | the reaction the electrons in an atoms make when a change is done to it |
reactants | the molecules initially involved on a chemical reaction |
products | the molecule outcome of a chemical reaction |
coefficient | the number of molecules in a chemical formula |
subscript | the amount of atoms of a particular element in a molecule |
ionic compound | held together by perfect match of electrons in the atoms, like a puzzle put together |
covalent compound | held together by sharing pairs of electrons between atoms |
metallic compound | held together by sea of electrons that move freely around each atom |
synthesis | combining two or more atoms to make a artificial molecule |
decomposition | analysis or breakdown of a compound into simpler compounds, the opposite of synthesis |
single replacement | happens when one element is replaced by another in a chemical reaction |
multiple replacement | happens when two or more elements replace each other in a chemical reaction |