'Nh3 ammonia' diaporamas de présentation

EXCRETION

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Practice Drawing Lewis Dot Structures at the top margin of page 4

Practice Drawing Lewis Dot Structures at the top margin of page 4. H Na Cl. What does the number of dots around the atomic symbol represent?? The number of valence electrons. The Rule of 8. Atoms tend to gain, lose, or share electrons until they have eight valence electrons. UFC OCTagon.

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Interactive Nitrogen Cycle

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Classifying Matter

Classifying Matter. CLASSIFYING MATTER. Has mass and volume . matter. pure substance. pure substance. same type. A pure substance is made up of all the _________ of particles. This is one particle. The rest are all the same particles. CLASSIFYING MATTER. Has mass

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Energy Flows and Matter Cycles

EK 4.A.6 Interactions among living systems & with their environment result in the movement of matter & energy. Energy Flows and Matter Cycles. Energy Flows through Trophic Levels.

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GLE #1

GLE #1. Both elements and compounds are pure substances Compounds are made by chemically combining 2 or more elements (the only way to break down a compound is by another chemical change-they break into smaller compounds and elements) Smallest piece of an element is an atom

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ORGANIC MATTER

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