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Warm Up Week 9 10/15/13 pg. 54-55. What type of mixture is lemonade? Explain how you know. How are both compounds and elements considered pure substances? Would Oxygen gas (O 2 ) be considered a compound, mixture, molecule or atom? In what form of H 2 O are the particles moving the fastest??.
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Warm Up Week 9 10/15/13 pg. 54-55 What type of mixture is lemonade? Explain how you know. How are both compounds and elements considered pure substances? Would Oxygen gas (O2) be considered a compound, mixture, molecule or atom? In what form of H2O are the particles moving the fastest??
Warm Up Week 9 10/16-17/13 pg. 54-55 1.How do you know if 2 chemicals have chemically combined rather than just physically combined? 2.What do the particles of a liquid and solid have in common that is different than particles of a gas? 3.What is the difference between a mixture and a compound? 4.What is a heterogeneous mixture? What are some examples of heterogeneous mixtures? 5. What is a homogeneous mixture? Examples?
Warm Up Week 9 10/18/13 pg. 54-55 • What sign of a chemical change proves that a green copper penny has gone through a chemical change? • What type of mixture is sugar water? How do you know? • Which state of matter is the warmest? Coolest? What about the state of matter makes it warm or cold? • Groups of two or more atoms of the same element bonded together (like H2, and O2)are called _______________.