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DO NOW

DO NOW. Elements in the same (group/period) have similar chemical properties The three phases of matter are solid, _______ and _____ In order to change something from liquid to gas I need to (decrease/increase) the temperature What do you think the difference between physical and chemical is?.

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DO NOW

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  1. DO NOW Elements in the same (group/period) have similar chemical properties The three phases of matter are solid, _______ and _____ In order to change something from liquid to gas I need to (decrease/increase) the temperature What do you think the difference between physical and chemical is?

  2. DO NOW REVIEW Elements in the same (group/period) have similar chemical properties The three phases of matter are solid, _______ and _________ In order to change something from liquid to gas I need to (decrease/increase) the temperature What do you think the difference between physical and chemical is?

  3. NOTES Title: Properties Take out a piece of paper in the next 20 seconds We write notes silently so we can focus on our work We are working to be honor roll students and the best freshman at Craigmont who are going to the best colleges in the country! 

  4. PROPERTIES Key Point #1: Properties of a substance are its characteristics. Properties can be either physical or chemical

  5. PROPERTIES Key Point #2: Physical properties are measurable and describe a substances state. Examples include: phase of matter, color, size, boiling/melting points, density.

  6. PROPERTIES Key Point #3: Chemical properties are things that only become evident when a substance goes through a chemical reaction Examples include: flammability, reactivity, toxicity, type of bond an atom will form

  7. PROPERTIES Key Point #4: Density can be measured using the formula: D = mass/volume Example: The United States has recently been sold some Uranium to make a nuclear weapon. They want to make sure that what they were sold is really Uranium. The density of Uranium is 3.5 g/mL. The sample they have has a mass of 14g and a volume of 4mL. Do they have Uranium?

  8. INDEPENDENT PRACTICE • Label the following as chemical or physical properties: • Density • Phase of matter • Reactivity • Boiling point • Length • Shape • How an atom will bond • Flammability What is the difference between a chemical and physical property? Solve: The mass of an object is 30g. The volume is 15mL. What is the density? A scientist wants to know what element she has. The density is the one you found in #3. According to this chart, what does she have? as

  9. EXIT TICKET Which of the following is NOT a physical property? a. size b. shape c. reactivity d. phase of matter Solve the following density problem: I am trying to find out if a necklace of mine is real gold. Gold has a density of 3.0 g/mL. My necklace has a mass of 2g and a volume of 1 mL. Is my necklace gold?

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