ساينس الصف السادس الإبتدئي الفصل الدراسي الاول ساينس سادسة ابتدائي – ترم أول In This part we will study : Properties of carbon dioxide: 1) It is colorless, tasteless and odorless gas. 2) It doesn’t burn and doesn’t help in burning. 3) It easily dissolves in water, so it is not collected by displacement of water (G.R) 4) It is heavier than air. 5) It reacts with magnesium to form white powder (magnesium oxide) and the black ash (carbon or coal) will deposit on the walls of the tube. Importance of carbon dioxide: 1) Used in making soft drinks. 2) Used in extinguishing (putting out) fires (G.R) Because it doesn’t burn and doesn’t help in burning. 3)Used in refrigeration. Where CO2 is condensed by pressure and cooling then pressure is relieved forming dry ice that is used in refrigeration. 3)It is used in making bread bubbled and tasty. Because the fermentation of yeast added to the bread produces carbon dioxide which expand by heating and make the food porous and tasty. 4) It takes part in the photosynthesis process in green plants to produce food and oxygen for respiration. Give reason: Photosynthesis process is important for plants and all living organisms. Because: 1. It produces food for plants needed to build their bodies as well as food for all living organisms. 2. It produces oxygen needed for respiration of all living organisms. لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا