PHYSICAL CHANGES: breaking of glass , peeling a fruit , freezing an egg, cutting of firewood , mixing of vinegar and black pepper , shredding paper, melting of ice , smoke coming from a boiling kettle , breaking a bottle, crushing a can, CHEMICAL CHANGES: curding of milk, baking of bread, rusting of nails, firework display, digesting food , cooking an egg , rusting iron , mixing an acid and a base , burning a candle , mixing baking soda and vinegar,

CHANGES IN MATTER

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?