1 / 13

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

drago
Télécharger la présentation

GLE #1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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 • Smallest piece of a compound is a molecule

  2. Hydrogen + Oxygen H(2): Hydrogen (gas) burns, reacts explosively with oxygen, chlorine and fluorine O: Oxygen (gas) very reactive, needed for fire

  3. Water H2O- water liquid (typically) puts out fire

  4. Sodium + Chlorine Na: Sodium (solid, metal) Reacts violently w/water Cl: Chlorine (gas) Poisonous

  5. Table Salt NaCl – table salt safe to eat dissolves in water solid

  6. Carbon + oxygen C: Carbon (solid) charcoal/diamonds O: Oxygen (gas) very reactive, needed for fire

  7. Carbon Dioxide CO2- carbon dioxide what animals exhale what plants take in

  8. Carbon+Hydrogen+Oxygen C (6): Carbon (solid) charcoal/diamonds H (12): Hydrogen (gas) burns, reacts explosively with oxygen, chlorine and fluorine O (6): Oxygen (gas) very reactive, needed for fire

  9. Glucose (Sugar) C6H12O6- glucose (sugar) dissolves in water solid edible

  10. Nitrogen + Hydrogen N: Nitrogen (gas) not reactive as an element H (3): Hydrogen (gas) burns, reacts explosively with oxygen, chlorine and fluorine

  11. Ammonia NH3- ammonia gas pungent odor dissolves in water (household cleaner) used in fertilizers, plastics and explosives

  12. Sodium+Hydrogen+Carbon+Oxygen Na: Sodium (solid, metal) Reacts violently w/water H: Hydrogen (gas) burns, reacts explosively with oxygen, chlorine and fluorine C: Carbon (solid) charcoal/diamonds O (3): Oxygen (gas) very reactive, needed for fire

  13. Baking Soda NaHCO3- Baking Soda (sodium bicarbonate) cleaning (clothes, teeth, etc.) cooking deodorizing puts out grease and electric fires

More Related