Suppose you need to build a raft to cross a fast-moving river. Describe the physical and chemical properties of the raft that would be important to ensure your safety.
Answer (2)
Physical: the raft needs to float, which means what you make the raft out of must be less dense than water. The raft would need sturdiness- if the raft is frail, the water might break it Chemical: It can not react with water and it can not be made of a completely soluable substance (something that would dissolve in it like salt)
To build a safe raft for crossing a fast-moving river, the materials used must be less dense than water, sturdy, and not react with water. It is important to avoid materials that can dissolve in water or corrode, ensuring the raft remains intact and functional during the crossing.
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