2. To change the colour of a carnation we need water, red food colouring and a white carnation. Mix a few drops of red food colouring with the water. Put the carnation in the water and watch the flower change from white to pink and red. The stem of the flower "drinks" up the water and provides it to the leaves and flowers.

3. We need water, red food colouring and a white carnation.

5. Mix a few drops of red food colouring with the water.

6. Put the carnation in the water.

9. Observe the changes in the flower.

17. Our flower is now pink with shades of red. Red and white make pink.