of how different pH levels affect the population growth of yeast, which was based on the mm of carbon dioxide produced. Through this, our independent variable was the pH level of solution added to the test tube of yeast and sugar. Our dependent variable was the mm of CO2 produced, indicating population growth. For this lab, the proper control was a test tube with the yeast and sugar but no pH solution added. This was useful to compare our data to because it wasn’t being changed by the pH. Therefore
CHEMISTRY-WINE MAKING | Investigating the effectiveness of common fining agents on homemade fruit wine with respect to Turbidity, Sediment level, Ph and Alcohol content. | | Year 12 Chemistry | Extended Experimental InvestigationA comparison of chemical flocculation agents | Mario Mitov | Mrs Cullen 2011 | | Contents: 1.0- Abstract 2.0- Introduction/Background
Photosynthesis Word Equation: Light Carbon Dioxide + Water Oxygen + Glucose Chlorophyll How to test a leaf for starch: 1. Dip leaf boiling water for about 1 minute to soften it, stop further chemical changes and make the cell more permeable. 2. Turn off Bunsen burner. Put the leaf into the half a test-tube of ethanol. Stand the test-tube
relationship between the leakage of red pigment from a beetroot cell and the surface area. 要做到這一點成功，我需要改變表面面積的甜菜根細胞，然後準確地測量，如果沒有多少染料租出。 To do this successfully I will need to alter the surface area of the beetroot cells accurately and then measure if any and how much dye is let out.
Science For Living Notes (Compiled) Table of Contents Unit 1 Measurement 5-10 Unit 2 Matter 11-48 Unit 3 Basic materials for maintaining life Air 49-54 Water 55-68 Food 69-71 Other biomolecules of life 72-76 Unit 4 Energy in the Community Electricity 77-78 Heat 78-81 Light 82-91 Sound 92 Simple Machines 93-99 Unit 5 The Physical Environment Weather and Climate 100-113 Soils 114-128