물리 변화와 화학 변화의 예 조사하기 by 푸릇푸릇 과학 https://padlet.com/science_science/je2lr9mvgi11ulxa en-us 2024-03-24 12:35:29 UTC 2024-03-24 12:38:10 UTC hello@padlet.com https://padlet.com/science_science/je2lr9mvgi11ulxa/wish/2931364811 2024-03-24 12:38:10 UTC https://padlet.com/science_science/je2lr9mvgi11ulxa/wish/2931364811