Pinyin/Chemistry

Chemistry is a fundamental natural science subject that study the characteristics, compositions, structures and laws of change of substances. The subject of chemistry study involves the interactions between substances or the interactions between matters and energy. Traditional chemistry always involves the contact and changes of two substances, that is chemical reaction, or is a process of a substance changing into another substance. These changes sometimes need electromagnetism, in which electromagnetism is involved in triggering chemical actions. But sometimes chemistry needs not to be involved in reactions between substances. Spectroscopy studys the relationships between substances and light, and these relationships do not involve chemical reactions.

Huàxué shì yīmén yánjiū wùzhí de xìngzhì, zǔchéng, jiégòu, yǐjí biànhuà guīlǜ de jīchǔ zìrán kēxué. Huàxué yánjiū de duìxiàng shèjí wùzhì zhījiān de xiānghù guānxì, huò wùzhì hé néngliàng zhījiān de guānlián. Chuántǒng de huàxué chángcháng dōu shì guānyú liǎng zhǒng wùzhì jiēchù, biànhuà, yějiùshì huàxué fǎnyìng, yòu huòzhě shì yīzhǒng wùzhì biànchéng lìngyī zhǒng wùzhì de guòchéng. Zhèxiē biànhuà yǒushí huì xūyào shǐyòng diàncíbō, dāngzhōng diàncíbō fùzé jīfā huàxué zuòyòng. Bùguò yǒushí huàxué dōu bù yīdìng yào guānyú wùzhì zhījiān de fǎnyìng. Guāngpǔxué yánjiū wùzhì yǔ guāng zhījiān de guānxì, ér zhèxiē guānxì bìngbù shèjí huàxué fǎnyìng.