Rust
Dominique designed an experiment to test the following question:
Which liquid will corrode rust from a nail the fastest?
Dominique decided to test apple cider vinegar, hydrochloric acid, and a salt and lemon juice solution to determine which liquid breaks down rust the fastest.
1. Pour 300 ml of apple cider vinegar into a glass beaker. Pour 300 ml of hydrochloric acid into a glass beaker. Pour 300 ml of a salt and lemon juice solution in a glass beaker.
2. Use 3 nails with the same amount of rust. Place 1 in each beaker.
3. Start the timer and record how long it takes for the rust to corrode on each nail.