英语笔记

Gen 产生词根generate 繁殖，gene 基因

Indigenous 国产的，collagen 胶原蛋白

Hydro 水词根:hydrogen 氢.hydrant 消防栓，hydroelectric station 水电站，

Oxy 氧词根:oxygen 氧，antioxidants substance 抗氧化物

Carbon dioxide 二氧化碳

Low -carbohydrates diet 低碳饮食

Be made of 物理变化the book is made of paper

Be made from 化学变化

The paper is made from wood

Matter泛指，不可数，肉眼可见，分子，原子，the matter is made of atoms and molecules ，what is the matter ，as the matter of fact ，it doesn’t matter

Substance 具体物质，可数，化学变化，有毒物质

Substance like sugar have many atoms in their molecules