hello people , this week in science we have been looking at indicators and finding out the level and colours of the ph scale. we did this by working in groups of 3 and using a lot of different materials.
materials
1. red litmus paper
2. blue litmus paper
3. sodium hydroxide
4. hydrochloride acid
5. pipette
6. 4 test tubes
steps.
1. rip the litmus paper in half and put half in each test tube.
2. add 3 drops of hydrochloride acid to the blue litmus paper in tube 1.
3. add 3 drops of sodium hydroxide to the blue litmus paper in test tube 3.
4. add 3 drops of hydrochloride acid to the red litmus paper in test tube 2.
5. add 3 drops of sodium hydroxide to the red litmus paper in test tube 4
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