Litmus Paper (science class)

 Materials:

1. Red litmus paper
2. Blue litmus paper
3. Sodium hydroxide
4. Hydrcloric acid
5. Pipette
6. 4 test tubes

Steps:

1. Rip the litmus paper in half and put it in each test tube
2. Add 3 drops of Hydrocloric acid to the blue litmus paper in test tube 1
3. Add 3 drops of Hydrocloric acid to the red litmus paper in test tube 2
4. Add 3 drops of Sodium Hydroxide to the blue litmus paper in test tube 3
5. Add 3 drops of Sodium Hydroxide to the red litmus paper in test tube 4

Findings

Blue litmus paper when added to hydrcloric acid turned red

Blue litmus paper when added to Sodium hydroxide stayed blue

Red litmus paper when added to Hydrcloric acid stayed red

Red litmus paper when added to sodium hydroxide went blue

Acid (Science class)

 What is an acid?

An acid is a liquid that has a PH(Power of hydrogen) level of between 1-7, it tastes sour and is used batteries and in our stomachs

What are 3 examples of acids?

Lemons- Citric acid

Vinegar-acetic acid

Batteries- sulphuric acid

Red Cabbage indicator experiment

Materials

1. Red cabbage
2. Beaker
3. Bunsen burner
4. Pipette
5. Sodium Hydroxiden
6. Hydrocloric Acid
7. Test tubes
8. Paper towel
9. Test tube rack
10. Water
11. Dishwashing powder
12. Floor cleaner
13. Fabric softener

Sodium hydroxden-PH level of 12-13

Hydrocloric acid- PH level of 2 (also corrosive)

Dishwashing powder-Ph level of 12-13

Floor cleaner-Ph level of 3

Fabric softener-Ph level of 2