1What happened to red and blue litmus paper when they were dipped in lemon juice, soap water and salt water? Set the answer out in a table.
2What conclusion do those observations give about lemon juice, soap water and salt water? Give the reason with each answer.
3Plan a test of the fact that an acid and a base react chemically to give a salt and water, and name the parts of the report you would write.
4What advice would you give to a classmate going into the science laboratory for the first time?
5How are a hypothesis and a test related to each other?
6Why does observation alone not give full information? Explain with an example.
7A blue strip turned red while a red strip stayed the same. What kind of substance is this, and why?
8What must be clear before a test is started?
9Why is a report written after a test, and what are its parts in order?
10What is an indicator? Give one example.