Elements and the Periodic Table
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Đặc biệt | A | Ă | Â | B | C | D | Đ | E | Ê | F | G | H | I | J | K | L | M | N | O | Ô | Ơ | P | Q | R | S | T | U | Ư | V | W | X | Y | Z | TẤT CẢ
A
AnionA negatively charged ion formed when an atom gains electrons. | |
AtomThe smallest particle of an element that retains its chemical properties. | |
Atomic numberThe number of protons in the nucleus of an atom. | |
B
Bohr diagramA model showing electrons arranged in shells around the nucleus. | |
BrittleEasily broken or shattered when struck. | |
C
CationA positively charged ion formed when an atom loses electrons. | |
Chemical equationA symbolic representation of a chemical reaction using chemical formulas. | |
Chemical formulaA combination of chemical symbols showing the types and numbers of atoms in a compound. | |
Chemical symbolA one- or two-letter abbreviation representing an element. | |
CompoundA pure substance made of two or more different elements chemically bonded together. | |