1. Science 8 – Mix & Flow of Matter October 14, 2014

2. So far….. -Fluids – anything that ___________ and comes to rest with a ___________ surface. -WHMIS symbols – recognize them and more importantly know what to do to keep yourself safe when you see one -Classification of Matter into: Mixtures and Pure Substances and then more classification of mixtures into heterogeneous and homogeneous and pure substances into elements and compounds. -The ones that are hardest to tell apart are: _______________________ from _______________________. - _____________________ have definite properties that don’t change unless the substance is not pure. Ex. Water boils at exactly 100°C at sea level and it freezes at 0°C or it is NOT pure water – it has something else in it. -Solubility – If something dissolves in water it is _________________ in water. If I wanted to dissolve a pill in water for a child to drink the fastest way to do it would be to: (3 ways)__________________________ _____________________________________________________________________________________

3. -Solutions can be described as: -___________ ____________ - more solute can be dissolved in the solvent -_______________________ - the maximum amount of solute is dissolved at a specific temperature -_______________________ - an extra amount is dissolved in the solvent by manipulating conditions such as pressure or temperature – Ex. Carbon dioxide in pop – it is dissolved or forced in under pressure -Particle Theory of Matter – there are _______ points that are part of this model and it explains how substances in our world behave: -Ex. Why air works in bike tires _________________________________ -Why some substances are able to be dissolved in water or other solvents and some can’t ___________________________ -Why hot molasses will flow faster than cold molasses ______________________________________ -Flow Rate of fluids – refers to how fast they flow. Units can be ___________ or ___________. -The higher the flow rate of a fluid the __________________ its viscosity. -Viscosity is a fluids _____________________ to flow. -The higher the temperature of a fluid the _________________ the flow rate and _________________ the viscosity.

4. New Outcomes: 1)Describe examples in which materials are prepared as fluids in order to facilitate transport, processing or use. As you watch the videos complete the chart below: Video – TitleWhat I Learned About Oil ProcessingWhat is the bias of the video? Promotion of Tar Sands, Discouraging Tar Sand Development or neither.

5. Can you think of any other examples where fluids are manipulated for processing or human use??? -Ex. Tooth mold for retainers, braces VISCOSITY Most oils on the shelves today are "Multigrades", which simply means that the oil falls into 2 viscosity grades (i.e. 10w-40 etc) Multigrades were first developed some 50 years ago to avoid the old routine of using a thinner oil in winter and a thicker oil in summer. In a 10w-40 for example the 10w bit (W = winter, not weight or watt or anything else for that matter) simply means that the oil must have a certain maximum viscosity/flow at low temperature. The lower the "W" number the better the oil's cold temperature/cold start performance. The 40 in a 10w-40 simply means that the oil must fall within certain viscosity limits at 100°C. This is a fixed limit and all oils that end in 40 must achieve these limits. Once again the lower the number, the thinner the oil: a 30 oil is thinner than a 40 oil at 100°C etc. Your handbook will specify whether a 30, 40 or 50 etc is required.

6. LiquidVolumeMass (remember to subtract cylinder) Water50.0 mL Alcohol50.0 mL Vegetable Oil50.0 mL

7. Assignment: Read topic 5 in textbook – pages 50 – 58 Once you are done reading this topic you can do the Find Out Activity on page 58 – What is the Density of a Pencil? Complete the activity and show calculations below: Answer question 1 – (What did you find out) and do the extension and show work below for your object. Complete question 4 on page 58 – Copy and complete the chart below.