Chất lỏng: water, coffee, tea, milk, oil, soup, gasonline, blood
Chất rắn: ice, bread, butter, cheese, meat, gold, iron, sliver, glass, paper
Khí: steam, air, oxygen, nitrogen, smoke, smog, pollution, ...
Phân tử:Rice, chalk, corn, dirt, dust, flour, grass, hair, pepper, salt, sand, sugar, wheat,....