1 / 18

Lab 1.1 Vocabulary Turn to your vocabulary section

Lab 1.1 Vocabulary Turn to your vocabulary section. 1. Endothermic: a chemical reaction that absorbs heat. 2. Exothermic : a chemical reaction that releases heat. 3. P ure S ubstance : a substance that appears to be made of only one thing.

gisela
Download Presentation

Lab 1.1 Vocabulary Turn to your vocabulary section

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. Lab 1.1 VocabularyTurn to your vocabulary section

  2. 1. Endothermic:a chemical reaction that absorbs heat

  3. 2.Exothermic: a chemical reaction that releases heat.

  4. 3.Pure Substance: a substance that appears to be made of only one thing.

  5. 4. Volume:the amount of space an object takes up.

  6. 5. Displacement:the movement of liquid caused by the volume of a solid object.

  7. 6. Soluble:Able to be dissolved in a solvent (water) **Insoluble

  8. 7. Immiscible:not able to evenly mix.

  9. 8. Dissolve:to form a solution (evenly mixed, one color) by mixing a substance with water.

  10. Lab 1.1 • NOTES Turn to your notes section

  11. Inquiry 1.1: The Bottle and the Balloon • Observation: The bottle expanded when heated and contracted when cooled. • Conclusion: Air’s volume expands or contracts depending on temperature. • Application: a basketball left in a garage over winter.

  12. Inquiry 1.2: Similar Objects • Observation:When the solid objects were added to the liquid, the original level of the liquid rose to a higher level. • Conclusion:The volume of the solid displaced the volume of the water. • Application: Too much ice in a drink.

  13. Inquiry 1.3: The Burning Candle • Observation: The flame goes out when the jar is placed over the candle. • Conclusion:Fire needs oxygen to burn. • Application: Fire blankets

  14. Inquiry 1.4: Describing Matter • Observation: The rock seems to be made of more than one color. The shaving cream appears to be all one color and texture. • Conclusion: Neither of these objects are pure substances • Application: Is milk a pure substance?

  15. Inquiry 1.5: Adding Water • Observation: The sand did not dissolve. The purple crystal did dissolve. • Conclusion: The sand is insoluble in water. The crystal is soluble in water (it dissolved). • Application:Diluting wastewater.

  16. Inquiry 1.6: Mixing Liquids • Observation: There are two layers of liquid in the container. • Conclusion: The two liquids are immiscible. • Application: Italian Salad Dressing

  17. Inquiry 1.7: Floating and Sinking • Observation: The cup shaped pan floated and the folded pan did not float • Conclusion: Air helps objects to float. Increased surface area also helps objects to float. • Application: Rafts, life jackets. When floating in a pool, hold your breath and spread your arms and legs.

  18. Inquiry 1.8: Reacting a Tablet • Observation: The reaction produced gas and the temperature lowered. • Conclusion: Chemical Reactions can absorb or release heat. This reaction was endothermic. • Application: Alka Seltzer reduces acid/heat in stomach (indigestion).

More Related