1 / 15

Bell Ringer

Bell Ringer. Describe water without using the word wet. Water is made up of atoms Atoms attach together, or bond. To form molecules. 2 hydrogen atoms bonded to an oxygen atom form a water molecule ( H20). Structure of Water. Each end of a molecule has a slight electric charge

earnest
Télécharger la présentation

Bell Ringer

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. Bell Ringer • Describe water without using the word wet.

  2. Water is made up of atoms Atoms attach together, or bond. To form molecules. 2 hydrogen atoms bonded to an oxygen atom form a water molecule ( H20) Structure of Water

  3. Each end of a molecule has a slight electric charge Oxygen = slight negative charge; hydrogen has a slight positive charge Molecule that has electrically changed areas is a polar molecule Structure of Water

  4. Structure of Water • The positive hydrogen ends of the water molecule attract the negative oxygen ends of nearby water molecules. • The end result, the water molecules tend to stick together

  5. Capillary Action – combined force of attraction among water molecules and the the molecules of surrounding materials Example drinking from a straw (you will see the liquid rise higher in the straw) Key Properties of Water

  6. Surface Tension- is the tightness across the surface of water that is caused by the polar molecules pulling the one another. The tightness of the water keeps the bug from sinking Key Properties of Water

  7. Solution - is a mixture that forms when one substance dissolves one another Solvent – the substance that does the dissolving. Many substances dissolve in water because water is polar. Water is a universal solvent because it dissolves almost everything Key Properties of Water

  8. Is the amount of heat needed to increase the temperature of a certain mass of substance by 1 degree C. Water high specific heat is due to the strong attraction amount water molecules Specific Heat

  9. Condensation – gas changes to a liquid Changing State

  10. Freezing – at 0 degrees C liquid water freezes Molecules lose energy and move more slowly Changing State

  11. Melting – Temperature reaches 0 degrees C the solid ice melts and becomes a liquid. Changing State

  12. Evaporation – process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous state Changing State

  13. Summarizer • At the end of your notes write a summarizer paragraph about your notes today!

  14. Adhesion • the tendency of water to stick to other substances • Water can also be attracted to other materials.

  15. Cohesion • the attractive force between water molecules • Water is attracted to other water

More Related