Red Cabbage Indicator

 Aim: I want to find out how red cabbage can tell if a liquid is an acid or a base.

Research:

Method:

Equipment:

• Red Cabbage
• Large Beaker
•  Acid (Hydrochloric Acid)
•  Base (Sodium Hydroxide)
• Eyedropper
• Test Tube (6)
• Warm Water

Instructions:

1.  Wash your hands.
2.  Get your equipment.
3. Put warm water in the beaker.
4. Rip red cabbage into very small pieces.
5. put the red cabbage into the beaker.
6. Mix.
7. fill eyedropper with the red cabbage water and add three drops into each test tube.
8.  The liquid has to be below half.
9. Add some base or acid and try to make different colors.

Photos Or Videos of Experiment.

I didn't get any videos because I had to leave early so I will add an internet photo.

Discussion:

What is an acid and a base?

An acid is a contributing product containing hydrogen ions. Now the solution contains more hydrogen ions than hydroxide ions. That form of solution is acidic. A foundation is a material capable of consuming hydrogen ions. As a base is dissolved in water the equilibrium between hydrogen ions and hydroxide ions changes in the opposite direction.

What do chemical indicators do?

chemical indicator, any substance that gives a visible sign, usually by a color change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. The common application of indicators is the detection of endpoints of titrations.