Three Ways to Represent a Reaction · 表示反应的三种方式
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| macroscopic/ˌmækrəˈskɒpɪk/ | 宏观 | hóng guān |
| particulate/pəˈtɪkjʊleɪt/ | 微粒 | wēi lì |
| symbolic/sɪmˈbɒlɪk/ | 符号 | fú hào |
One event, three viewpoints
- Watch magnesium burn -- a bright flash and white ash.
- Zoom in and you would see atoms rearranging.
- Write it down and it becomes a tidy equation.
- The same event can be told in three languages.
同一事件,三个视角
- 看镁燃烧——一道亮闪和白色的灰。
- 放大来看,你会看到原子在重新排列。
- 把它写下来,就成了一个整洁的方程。
- 同一个事件能用三种语言讲述。
The macroscopic view
- The macroscopic 宏观 level is what you see, feel, and measure.
- Colour, bubbles, temperature, mass -- the lab observations.
- It is the everyday, hands-on picture.
宏观视角
- 宏观层面是你看到、感受到、测量到的。
- 颜色、泡泡、温度、质量——实验室的观察。
- 它是日常的、动手的画面。
Observing bubbles and a temperature rise is which level? · 观察到气泡和温度升高属于哪个层次？
What you directly see and measure is the macroscopic level. · 你直接看到和测量的是宏观层次。
The particulate view
- The particulate 微粒 level shows the atoms and molecules themselves.
- Particle diagrams reveal how they rearrange.
- It explains why the macroscopic change happens.
微粒视角
- 微粒层面显示原子和分子本身。
- 粒子图揭示它们如何重新排列。
- 它解释宏观变化为什么发生。
A diagram of individual atoms rearranging is which level? · 单个原子重新排列的示意图属于哪个层次？
The particulate level shows the actual atoms and molecules. · 微粒层次展示了实际的原子和分子。
The particulate view gives the ____ for the macroscopic observations. · 微粒视图为宏观观察提供了 ____。
Rearranging atoms explains why the observed change occurs. · 原子的重新排列解释了为何观察到变化发生。
The symbolic view
- The symbolic 符号 level is the chemical equation.
- Formulas and coefficients summarize the whole thing.
- A good chemist moves fluently between all three.
符号视角
- 符号层面就是化学方程。
- 化学式和系数概括了整件事。
- 优秀的化学家能在三者之间流畅切换。
Three ways to see a reaction · 观察反应的三种层次
Sort each description by the level chemists are working at. · 将每个描述按化学家工作的层次进行排序。
The equation · 方程 $\text{C} + \text{O}_2 \to \text{CO}_2$ is which level? · 方程式 $\text{C} + \text{O}_2 \to \text{CO}_2$ 属于哪个层次？
Formulas and coefficients are the symbolic representation. · 化学式和系数是符号表示法。
Match each description to its level. · 将每个描述与其对应的层次匹配。
Observations = macroscopic, atoms = particulate, equation = symbolic. · 观察 = 宏观，原子 = 微粒，方程式 = 符号。
Burning carbon: $\text{C} + \text{O}_2 \to \text{CO}_2$.
- Macroscopic: the coal glows and gives off heat.
- Particulate: one carbon atom bonds with one $\text{O}_2$ molecule.
碳燃烧:$\text{C} + \text{O}_2 \to \text{CO}_2$。
- 宏观:煤发红光并放出热。
- 微粒:一个碳原子与一个 $\text{O}_2$ 分子成键。
The three levels describe the same single event. · 这三个层次描述的是同一个单一事件。
They are three views of one reaction, not three different reactions. · 它们是一个反应的三个视角，而不是三个不同的反应。
The three levels describe the same event, not three different things -- always connect them. The symbolic equation's coefficients must match the particulate counts of particles. And macroscopic observations are the evidence, while the particulate view is the explanation.
三个层面描述的是同一个事件,而不是三个不同的东西——始终把它们联系起来。符号方程的系数必须与微粒的粒子数目相符。而且宏观观察是证据,微粒视角是解释。
A reaction can be told three ways: the macroscopic view (what you observe), the particulate view (the atoms rearranging), and the symbolic view (the equation). They all describe one event -- coefficients match particle counts, and the particulate picture explains the macroscopic evidence.
一个反应能用三种方式讲述:宏观视角(你观察到的)、微粒视角(原子重新排列)、符号视角(方程)。它们都描述同一个事件——系数与粒子数目相符,微粒画面解释宏观证据。