Hvis du ser denne meldingen, betyr det at vi har et problem med å laste en ekstern ressurs på nettsiden vår.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Hovedinnhold

Enhet 1: Atoms, compounds, and ions

Om dette emnet

Chemistry is the study of matter, and all matter is made up of atoms. We will learn about elements, atomic number and mass, isotopes, moles (chemistry moles, not the animal), and compounds.