返回卡包市场
Atoms and Molecules long 3
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片总数: 4 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
卡片预览 (4 张)
#1
正面 (问题)
What is IUPAC ?
背面 (解答)
The International Union of Pure and Applied Chemistry is an international scientific organization which approves names of elements, symbols and units.
#2
正面 (问题)
What is Atomic Mass ?
背面 (解答)
/ The mass of an atom of a element is known as its atomic mass. / In 1961 IUPAC accepted atomic mass unit (u) to express atomic and molecular mass of elements and compounds
#3
正面 (问题)
What is a molecule ?
背面 (解答)
A molecule is a group of two or more atoms that are chemically bonded together and capable of a independent existence.
#4
正面 (问题)
What is one [u]
背面 (解答)
1.66 x 10^-27 Kg