Welcome to my channel Lang Chantrea #langchantrea
សូមស្វាគមន៍មកកាន់ឆានែលរបស់លោកគ្រូ ឡាង ចន្ទ្រា #ឡាងចន្រ្ទា
Thank you for joining me to make a super exercise easy Chemistry Test!
Please feel free to leave me a comment below. Do you like Chemistry Tests?

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Thank you again for watching and I hope that you look forward to seeing my new next video. New videos come out every day.
After you watch these videos, you will be able to:
1-understand how to find n.o of elements in molecules
2-balance n.o chemical equations correctly