Reem Bakr

grade 2 g4 grade 4 g3 grade 3 g2 elements symbols examples monera protoctista fungi extended teir experimental techniques chromatography technique scientific enquiry and variables tools and 2d drawings lab safety rules igcse chemistry intro. ammeter electric circuits voltmeter life cycle plant reproduction convection and radiation conduction static electricity turning effects principle of moments moments pressure pressure calculations density density calculations electromagnets magnetism magnetic field planets of the solar system causes of day night and seasons solar system and scientists contributions distance-time graph calculating speed effect of temperature surface area and catalysts concentration rate of reaction trends in periodic table contribution of rutherford and other scientist reactivity series and displacement reaction genes variation (environmental and inherited) selective breeding charles darwin's theory of natural selection natural selection pregnancy emales and male reproductive systems birth menstrual cycle skeletal system and muscular system components of circulatory system blood pathway components of blood and functions sound loudness oscilloscope pitch deafness ear how do we hear chemical reactions in everyday life gas pressure changes in state of matter states of matter properties diffusion and atmospheric pressure the particle theory atomic structure electron arrangement atomic number atomic mass atoms separating mixtures mixtures chemical equations compounds structure defficiency nutrients nutrition uses diseases caused by some deficiency. food pyramid structure and uses of nutrients structure and function of digestive system and enz respiratory system structure function of each part and effect of smoking on lun stomata adaptation of the leaf cell structure transport of water through the plant scientificdrawings (lab equipment) plant kingdom classification vertebrates classification variation energy renewable and non-renewable resources types of energy invertebrates and vertebrates classification energy transfer diagrams power generators sankey diagrams energy transfers dynamos fossils fossil formation fossil record metals and non-metals properties of matter and materials acids and alkalis types of soil layers of soil what are minerals and ores? how is soil formed types of rocks and how they are formed the earth structure uses of some rocks indicators ph scale acids alkalis louis pasteur microorganisms viruses leaf structure ks3 cells adaptations of cells signs of life 7 life processes steps of the scientific method lab tools and 2d drawings + safety symbols classification of animals electricity the phases of the moon volume and density matter mass stars constellations orbit what are planets