Chemistry Educational Materials

+ward’ssciencewardsci.com800-962-2660 Phyllite Type: Metamorphic, regional. Texture/Appearance: Very fine-grained showing strong schistosity; commonly displaying crenulated (wavy) cleavage. Generally coarser than slate. Cleavage surface exhibits a...

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+ward’ssciencewardsci.com800-962-2660 Andesite Type: Igneous; extrusive. Texture/Appearance: Generally fine-grained, aphanitic. Massive structure, often porphyritic with phenocrysts standing out in a vitreous or fine-grained groundmass. Color: Dar...

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wardsci.com 800-962-2660 Scoria Type: Igneous; extrusive (volcanic). Texture/Appearance: Fine-grained to glassy; highly vesicular (>50%). Usually heavier and more crystalline than pumice. Color: Dark reddish-brown to black. Mineralogy/Chemistry: B...

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wardsci.com 800-962-2660 Slate Type: Metamorphic; regional. Texture/Appearance: Fine-grained; lacks mineral segregation banding, displays rock cleavage in one direction. Surface may appear somewhat smooth and shiny. Color: Various, including dark ...

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+ward’ssciencewardsci.com800-962-2660 Obsidian Type: Igneous; extrusive Texture/Appearance: Glassy with rare microphenocrysts or spherulites; conchoidal fracture. Color: Shiny black to brown. Mineralogy/Chemistry: A natural glass or rhyolitic (fel...

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wardsci.com 800-962-2660 Coal Type: Sedimentary; organic. Texture/Appearance: Peat is a brownish, matted variety of coal consisting of partly decomposed plant remains seen as visible vegetable matter. Lignite is a darker, more compact variety with...

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+ward’ssciencewardsci.com800-962-2660 Skarn Type: Metamorphic; contact. Texture/Appearance: Most often coarse-grained and granoblastic with no foliation. Massive structure with zones of mineral concentration. Color: Varies with mineralogy, but usu...

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wardsci.com 800-962-2660 Marble Type: Metamorphic; regional and contact. Texture/Appearance: Fine to coarse-grained; granoblastic to saccharoidal. May appear patched or with streaks or banding that is deformed. Color: Variable, commonly white, pin...

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Conditions for Customer Ownership We hold permits allowing us to transport these organisms. To access permit conditions, click here. Never purchase living specimens without having a disposition strategy in place. • Pond and Ramshorn snails: There ...

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Page 1 Bacteriophage (Coliphage) Conditions for Customer Ownership We are a USDA compliant facility and hold all necessary permits to transport our organisms. Each state is assisted by the USDA to determine which organisms can be transported acros...

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United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection & Quarantine 4700 River Road Riverdale, MD 20737 Permit to Move Live Plant Pests, Noxious Weeds, and Soil Interstate Movement Regulated by 7 CFR 33...

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United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection & Quarantine 4700 River Road Riverdale, MD 20737 Permit to Move Live Plant Pests, Noxious Weeds, and Soil Interstate Movement Regulated by 7 CFR 33...

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The Plus is Us. Your Texas Personal Account Managers: [email protected] + [email protected] + [email protected] Texas Essential Knowledge and Skills (TEKS) for Science high school biology discover biology modules at wardsci.com/TEKS Introducti...

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Working with Bacteria and Fungi © 2021 Ward’ s Science. All rights reserved. Rev. 2021 https://www.wardsci.com/store/ Page 2 Working with Bacteria and Fungi Bacteria Bacteria are the most numerous and, arguably, the most successful organisms on th...

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Page 1 Fear of Water Recommended Grade Level(s): Appropriate for: Middle school and High school Time Requirements: Activity Time: 20 minutes Teaching Topics & Concepts: • Hydrogen bonding, hydrophobic bonding, surface tension • Properties of water...

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Page 1 Freshwater Mussels Conditions for Customer Ownership We are a USDA compliant facility and hold all necessary permits to transport our organisms. Each state is assisted by the USDA to determine which organisms can be transported across state...

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