'Poor conductors' diaporamas de présentation

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Evaporation and condensation

Evaporation and condensation. Individual molecules can change phase any time Evaporation: Energy required to overcome phase cohesion Higher energy molecules near the surface can then escape Condensation: Gas molecules near the surface lose KE to liquid molecules and merge.

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The Periodic Table of Elements

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Science Module

Science Module. 8 th Grade. TABLE THE DISCUSSION. TAKS Objective 3. The student will demonstrate an understanding of the structures and properties of matter. TEKS Science Concepts 8.9. The student knows that substances have chemical and physical properties. The student is expected to:

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HEAT ENERGY

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CHAPTER 2 INTERATOMIC FORCES

CHAPTER 2 INTERATOMIC FORCES. What kind of force holds the atoms together in a solid?. Interatomic Binding. All of the mechanisms which cause bonding between the atoms derive from electrostatic interaction between nuclei and electrons.

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THE PERIODIC TABLE

THE PERIODIC TABLE. Dmitri Mendeleev. A Russian scientist who began to classify the 60 known elements of his time Worked with the indivisible model of an atom Atomic masses were known in comparison to hydrogen, which was set as "1".

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Introduction to the Periodic Table

Introduction to the Periodic Table. Dmitri Mendeleev. The elements were first arranged in the periodic ta ble in 1869 by Dmitri Mendeleev.

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THE PERIODIC TABLE

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HEAT TRANSFER: CONDUCTION

HEAT TRANSFER: CONDUCTION. DUNMAN SECONDARY SCHOOL Science (Physics). Some Expectations. Respect Others Respect the School Humility. Work Ethic. DO participate and ask questions. For order in class, raise your hand when asking a question. BRING all specified books.

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Periodic Table

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METALS, NONMETALS, METALLOIDS, & NOBLE GASES

METALS, NONMETALS, METALLOIDS, & NOBLE GASES. FOUR SECTION FOLDABLE ADVANCED ORGANIZER. PROPERTIES OF METALS. Most elements are metals Metals are located left of the Zig Zag line Metals have few electrons in their outer energy level

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Elements,Compounds and Mixtures

Elements,Compounds and Mixtures. Mixtures. Consist of a physical blend of two or more substances. They contain a variable composition Most materials found in nature are mixtures. EX. Air, stew, blood. Mixtures.

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Particle model of solids, liquids and gases

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Applications of Energy to The Real World

Applications of Energy to The Real World. A TAKS Tutorial. Energy causes Change. The sun radiates light and heat energy. At night, street lights convert electrical energy to light. As a car drives by, it is making power from gasoline - stored energy.

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Chemical Bonding

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Electrolytes

Electrolytes. Solutes whose solutions does not conduct electricity are nonelectrolytes . These solution are composed of molecules or are pure water. Ionic salts dissolved in water are strong electrolytes . Some solutes are poor conductors and are known as weak electrolytes .

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Electrolytes

Electrolytes. Solutes whose solutions does not conduct electricity are nonelectrolytes . These solution are composed of molecules or are pure water. Ionic salts dissolved in water are strong electrolytes . Some solutes are poor conductors and are known as weak electrolytes .

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Chemical Bonds:

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