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Physical & Chemical Properties

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Presentation on theme: "Physical & Chemical Properties"— Presentation transcript:

1 Physical & Chemical Properties
The Periodic Table Physical & Chemical Properties

2 CHEMISTRY of Atoms The Periodic Table
Mendeleev’s Table Mural at St. Petersburg University, Russia

3 Current Periodic Table
Los Alamos National Lab Elements in Song

4 Figure: 01-06

5 Composition of the Earth’s Atmosphere
Today: Figure: 01-06

6 Elements & Compounds Element: A substance that cannot be broken into simpler substances by chemical means, eg. Fe, Iron or S8 Sulfur FeS Compound: A substance with a constant composition that can be broken down into elements only by chemical processes,eg. FeS, Iron (II) sulfide

7 ~ 500 new molecules are currently added / hr
Chemistry & Matter How many different chemicals (atoms + molecules) do you think have been reported in the scientific literature? A) 100,000 B) 1,000,000 C) 10,000,000 D) 100,000,000 E) 1,000,000,000 CAS Registry : ~12,000 in 1907 ~ 500 new molecules are currently added / hr

8 Chemistry & Matter How many different chemicals (atoms + molecules) do you think have been reported in the scientific literature? A) 100,000 B) 1,000,000 C) 10,000,000 D) 100,000,000 *** E) 1,000,000,000 CAS Registry : ~12,000 in 1907; ~ 75 million in 2013; 100,000,000 reached in July 2015 ~ 500 new molecules are currently added / hr

9 Organization of Matter

10 Chemical Visualization: Atoms & Molecules
Atomic Force Microscopy / Molecular Modeling Experimental / Mathematical Figure: 01-05a-d

11 States of Matter States of Matter Movie

12 States of Water

13 Chemistry & Matter Organization of atoms & molecules:
atoms/elements  molecules/compounds Physical vs. Chemical Properties Solid (s), Liquid (l), Gas (g) Homogeneous vs. Heterogeneous Mixtures Chemical Reactions

14 Chemistry & Matter: Properties & States
Physical vs. Chemical Properties Solid (s)  Liquid (l)  Gas (g) Homogeneous vs. Heterogeneous Mixtures Extensive vs. Intensive Properties Varies with amount (extensive) or does not vary with amount (intensive) Heat of reaction is extensive (Chemical Property), density is intensive (Physical Property)

15 A) I and II B) I and III C) II and III D) I, II and III
QUESTION Extensive properties of a pure substance depend on sample size whereas intensive properties are characteristic of that substance. Which of these properties are intensive? I) Color II) Mass III) Density A) I and II B) I and III C) II and III D) I, II and III

16 A) I and II B) I and III C) II and III D) I, II and III
Answer Extensive properties of a pure substance depend on sample size whereas intensive properties are characteristic of that substance. Which of these properties are intensive? I) Color II) Mass III) Density A) I and II B) I and III C) II and III D) I, II and III Correct Answer: B

17 Observations of Physical & Chemical Properties
Physical-Chemical Properties Movie

18 Which of these are chemical properties of matter?
QUESTION Which of these are chemical properties of matter? I) Rust/Corrosion II) Density III) Flammability IV) Melting point (Temperature: Solid  Liquid) A) I and II B) I and III C) II and IV D) III and IV

19 Which of these are chemical properties of matter?
Answer Which of these are chemical properties of matter? I) Rust/Corrosion II) Density III) Flammability IV) Melting point (Temperature: Solid  Liquid) A) I and II B) I and III C) II and IV D) III and IV Correct Answer: B

20 Mixtures and Compounds Movie
Using Physical & Chemical Properties: Distinguishing a Compound & a Mixture FeS Mixtures and Compounds Movie


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