Hellow guys, Welcome to my website, and you are watching 산성 용액과 염기성 용액에 물질을 넣으면 어떻게 될까요 [초등 과학 5학년 2학기 5단원 6차시]. and this vIdeo is uploaded by 수지샘클래쓰 at 2020-12-04T21:38:30-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
