Method

//**1.** ////__ **Collecting rain water.** __// //**2.** ////__ **Making the indicator** __// //**3.** ////__ **Checking the rain water with the indicator.** __//
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">1) ****Collect rain water over a period of time in ice cream containers and name them with the dates when they were collected. **
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">1) ****Cut up the cabbage in to small pieces and put it into a small pot. **
 * Add about 400ml of bottled water. **
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">2) ****Simmer the mixture without boiling until the colour of the cabbage turns to white. **
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">3) ****Let the water cool down. **
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">1) ****Put the rain water you collected in separate glass cups. **
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">2) ****Add the mixture into each glass about 1/3 of the amount of rain water in each cup with the straw (use the straw as an eye dropper).  **
 * <span style="line-height: 115%; font-family: 'Calibri', 'sans-serif'; font-size: 20pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; msobidifontsize: 11.0pt; msobidifontfamily: Calibri; msofareastfontfamily: Calibri; msolist: Ignore; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; msobidithemefont: minor-latin; msofareastthemefont: minor-latin;">3) ****Look at the colour of the water and compare it against the colour chart. **