Red Cabbage indicator

All solutions have a pH. Acid solutions, have lower pH.

Alkaline solutions, have higher pH.

Substances that aren't acidic or alkaline (that is, neutral solutions)

usually have a pH of 7.

Acids have a pH that is less than 7.

Alkalis have a pH that is greater than 7

Equipment:

1. Red Cabbage

2. Knife

3. Bunsen Burner

4. Beaker

5. Water

Method:

1. Cut the cabbage into small pieces.

2. Place the cabbage in the beaker and fill it with 50 ml of water.

3. Once the cabbage has boiled for 2 minutes turn it off and leave it to cool down.

4. Once it has cooled remove the cabbage leaves and use the red water as

5. an indicator.

Complete the quiz below:

The ph scale ranges from what numbers?

Name 4 substabces that are acidic?

Name 4 substances that are basic?

Name another pH indicator used in a science lab?

By using red cabbage as an indicator we can determine what the pH level is of

substances

Sherbet

 Baking Soda is also known as Sodium Bicarbonate.Due to its abrasive and cleaning properties it is used as a raising agent in baking, as a household cleaner and in a number of other ways.

My 10 uses of baking soda are:

1. Whiten your teeth

2. Mouthwash

3. To treat heartburn

4. May relive itchy skin and sunburns

5. May slow the progression of chronic kidney disease

6. Deodorant

7. Soothe canker sores

8. Fix fridge odors

9. Baking

10. To remove stains

Making Sherbet

We need to write down our equipment and the steps we will go through to make our sherbet.

Once we have completed the materials and steps we can make sherbet.

While you are eating your sherbet you can answer the 5 questions at the end.

Equipment:

1. Sugar

2. Baking Soda

3. Raro Crystals

4. Citric Acid

5. Tartaric acid

Steps

1. Add the baking soda sugar and citric acid together in a bowl

2. And the raro crystals and tartaric acid together

3. Add all ingredients together and place in a plastic bag

4. Mix it together well and and eat it .

Recipe:

1 teaspoon of powdered drink crystals (eg Raro)

1/4 teaspoon of citric acid

1 teaspoon of Icing Sugar

1/4 teaspoon Baking Soda.

Findings:

1. Which two ingredients in the sherbet are involved in the chemical reaction?

2. Which ingredients are not involved?

3. Can you think of any other chemical reactions that might happen in the kitchen?

4. Which ingredient is an acid?

5. Which ingredient is a base?

Blind taste testing

Equipment

1. Samples 1-9

2. Blindfold glasses

3. Recording chart

4. Ice cream stick taster

Method:

Get safety glasses and make a blindfold.
Set up your chart and make sure that the person you are working with knows
where to record your responses.
Using an ice-cream stick you will dip it into the Sample.
Once the sample is on the stick you will taste it and tell your partner your response.
There will be 2 Answers.
At taste test one you need to hold your nose.

Answer 1. Is it sweet, sour, salty, bitter. Record it.

Answer 2. What do you think it is. Record it.

Repeat this for the next samples but you will only need to use your
ice cream stick taster for samples 1-4.