Chemical Properties

Vocabulary #3

Compound: a chemical combination
of two or more elements.





Chemical bond: a link that atoms
or electrically charged particle can
form with each other.







Chemical formula: a way using letters
and numbers to show how much of each
element is in a sutance.



Ion: a electrically charged with unequal
numbers of protons and electrons.



Molecule: a group of bonded atoms
that acts like a single particle.





Chemical property: a way of decribing how

a subtance changes chemically with other

subtances.







Exothermic: a reaction that gives
out heat.





Endothermic: a reaction that absorbs
heat.