Science Notes Yr 9 + Yr 10 PDF

→ **Periodic Table** -------------------- - - - - - - - - - - - - - - - **Element** **Symbol** **Colour** **Features** **Uses** ------------- ------------ -------------- ---------------------- ---------- Copper Cu Brown...

→ **Periodic Table** -------------------- - - - - - - - - - - - - - - - **Element** **Symbol** **Colour** **Features** **Uses** ------------- ------------ -------------- ---------------------- ---------- Copper Cu Brown Conductive, Ductile Wires Iron Fe Silver Magnetic, Conductive Building Lead Pb Silver/Black Blocks Radiation Solder - **Element** **Symbol** **Properties** ------------- ------------ ---------------- Germanium Ge Lustrous Silicon Si Brittle - - - - - - - - - - - - - - - - - - - - - - - - - - - → **Inside the Atom** --------------------- - - - - - - - - - - - - - - - - - -  - - - - - - - - - - → **The Universe** ------------------ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - → **Energy on the Move** ------------------------ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - -  - - - - - - - - -   - - - - - - - - **Measure** **Series** **Parallel** -------------------- ------------------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------ **Voltage (V)** Voltage adds up to battery Same across parallel components **Current (I)** Same everywhere Split across parallel components **Resistance (R)** Resistance of all components added [\$\\frac{1}{r1} + \\frac{1}{r2} + \... = \\frac{1}{\\text{rt}}\$]{.math.inline} **Use** Series are useful for simple devices or when it is integral to know when a circuit has failed (so that if one component fails everything fails) Parallel circuits are used in more complex circuits so that if one component fail everything does not fail - - - → **Plate Tectonics** --------------------- - - - - - - - - - - - - - - - - - - - - - - - - - -  - - - - - - -  - - - - - - - - - - 1. 2. 3. 4. 5. - - - - - - - - - - → **Body Systems** ------------------ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - **Gland** **Hormone** **Target** **Function** ----------- -------------- ------------ --------------------------- Thyroid thyroxin liver Metabolic rate Ovaries oestrogen uterus Menstrual cycle Testes testosterone many Masculine characteristics - - - - - - - - - - - - - - - - - - - - - - - → **Chemical Reactions** ------------------------ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - eg. Potassium Iodide + Lead Nitrate → Potassium Nitrate + Lead Iodide 2KI + Pb(NO~3~)~2~ → PbI~2~(solid) + 2K+ + 2NO~3~- - - - - - - - - - - - - - - - - - - - - → **Genetics and Biotechnology** -------------------------------- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -