Atoms, Elements, Compounds
Completion requirements
Pori drwy'r eirfa gan ddefnyddio'r mynegai hwn
Arbennig | A | B | C | CH | D | DD | E | F | FF | G | NG | H | I | L | LL | M | N | O | P | PH | R | RH | S | T | TH | U | W | Y | Y CYFAN
A
Aniona negatively charged ion formed by gaining electrons. | |
Atomthe smallest unit of an element that retains its chemical properties. | |
Atomic modela scientific representation of the structure of an atom. | |
Atomic numberthe number of protons in an atom. | |
B
Balanced chemical equationA chemical equation with the same number of each type of atom on both sides. | |
Bohr diagramA model showing electrons arranged in shells around the nucleus. | |
Boiling pointThe temperature at which a liquid changes into a gas. | |
BrittleEasily broken or shattered when struck. | |
C
Cationa positively charged ion formed by losing electrons. | |
Closed systemA system in which no matter can enter or leave. | |