11H
proton ['prəʊtɒn]
21H
deuterium [djuː'tɪərɪəɪtɪəm]
原子序数 元素符号 中文名称
英文名
1
H
氢 Hydrogen ['haidrədʒən]
2
He
氦 Helium ['hi:liəm]
3
Li
锂 Lithium ['liθiəm]
•element [‘elimənts] 元素 •compound [‘kɔmpaund, kəm’paund] 化合物 •rearrangement [‘riːə’reɪndʒmənt] 重排
The Discovery of Atomic Structure
• Atom consists of positive, negative, and neutral entities (protons, electrons, and neutrons).
• Compounds are composed of atoms of more than one element.
• Chemical reactions involve only the rearrangement of atoms; atoms are not created or destroyed in chemical reactions.
应用化学专业英语-Lesson-2..
1、彩烟是什么材料做的？ 白色烟剂：柴油、润滑油、煤油甚至豆油等油液，都可以制成白色烟剂 。 彩色烟雾=白烟+各色染料
固体彩烟：颜色相对较淡，留空时间也短。 液体拉烟剂，理论拉烟时间7分钟。
2、彩烟是怎么喷出来的？ 飞机机腹下加挂了一个液体拉烟吊舱，注入了高沸点的液体拉烟剂， 通过氮气加压的方式将烟剂从拉烟喷嘴里“吹”出来，送入发动机喷出的 高温燃气中，形成的蒸气遇冷后凝结成雾，就成为浓浓的彩烟。飞机发动 机喷出的燃气与拉烟剂完美配合，最终形成喷烟。
24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr
铬 Chromium 锰 Manganese 铁 Iron 钴 Cobalt 镍 Nickel 铜 Copper 锌 Zinc 镓 Gallium 锗 Germanium 砷 Arsenic 硒 Selenium 溴 Bromine 氪 Krypton
11 Na 钠 Sodium
12 Mg 镁 Magnesium
13 Al 铝 Aluminum
14 Si 硅 Silicon
15
P 磷 Phosphorus
16 S 硫 Sulfur
17 Cl 氯 Chlorine
18 Ar 氩 Argon
19
K 钾 Potassium
20 Ca 钙 Calcium
4
Be
铍 Beryllium [bə'rɪlɪəm]
5
B
硼 Boron
['bɔ:rɔn]
6
C
碳 Carbon ['kɑ:bən]
7
N
氮 Nitrogen ['naitrədʒən]
8
O
氧 Oxygen ['ɔksidʒən]
9
F
氟 Fluorine ['fluəri:n]
10
Ne
氖 Neon
['ni:ən]
(number of protons + number of neutrons). • Isotopes are atoms of the same element (Z) with different
numbers of neutrons (A) in the nucleus. isotope [‘aɪsətəʊp] 同位素
•atom ['æ təm] n. 原子 •proton ['prəutɔn]n. 质子 •nucleus [‘nju:kliəs] 原子核
The Modern View of Atomic Structure
Isotopes, Atomic Numbers and Mass Numbers
• Atomic number (Z) = number of protons in the nucleus. • Mass number (A) = total number of nucleons in the nucleus
1. Dalton’s Atomic Theory (1808)
• Elements are composed of extremely small particles called atoms. All atoms of a given element are identical. The atoms of one element are different from the atoms of all other elements.
3、彩烟会不会造成污染？ 过去，有些拉烟剂拉出来的颜色非常漂亮，红的、黄的、绿的，但是 由于里面有含毒的成分，可能污染环境，对人体有害，后来这样的拉烟剂 都被淘汰了。
Review the Lesson One
Atoms, and Periodic Table
The Atomic Theory of Matter
• Protons and neutrons are located in the nucleus of the atom, which is small. Most of the mass of the atom is due to the nucleus.
• Electrons are located outside of the nucleus. Most of the volume of the atom is due to electrons.
21 Sc 钪 Scandium
22 Ti 钛 Titanium
23 V 钒 Vanadium
['səudiəm] [mæ ɡ'ni:ziəm] [ə'lju:minəm] ['silikən, -kɔn] ['fɔsfərəs] ['sʌlfə] ['klɔ:ri:n] ['ɑ:ɡɔn] [pə'tæ sjəm] ['kæ lsiəm] ['skæ ndɪəm] [tai'teiniəm] [və'neɪdɪəm]