1 / 15

Do Now:

Do Now:. Atoms are composed of what 3 subatomic particles? _______________ _______________ _______________ When an atom loses an electron it becomes Atoms are very small. How do they combine to make larger things? __________________________________________________________. Agenda:.

reegan
Download Presentation

Do Now:

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. Do Now: • Atoms are composed of what 3 subatomic particles? • _______________ • _______________ • _______________ • When an atom loses an electron it becomes • Atoms are very small. How do they combine to make larger things? • __________________________________________________________

  2. Agenda: • Semester Overview • Unit Overview (Calendar Activity) • Pre-Quiz • Grading Pre-Quiz • How are Atoms Held Together? • The Octet Rule • The HONC Rule • Borax Lab

  3. Semester 2 Overview • This semester we are going to study how atoms combine to make bigger things. • There are 2 main ways this happens on the microscopic level. • Chemical Bonding vs. Intermolecular Forces • (Unit 4) (Unit 5) • Then we will study how those bonds impact everything we see around us on the macroscopic level. • Properties of Solids and Liquids and Gas Laws • (also Unit 5) (Unit 6)

  4. Unit Overview (A DAY Calendar Activity) • Take out your calendar and examine it. Fill in the section above and below it following the directions in italics.

  5. Unit Overview (B DAY Calendar Activity) • Take out your calendar and examine it. Fill in the section above and below it following the directions in italics.

  6. Unit 4 Prequiz • You have 10 minute to take this quiz • Circle Pre at the top of the page • Please remember to write your answers on the blanks next to the number. • This quiz does not count toward your grade. • When you are done keep your prequiz at your desk.

  7. (4.1) The Octet Rule, Bonding, And You Chemical Bonding

  8. Objectives: • SWBAT to explain the basic nature of how atoms combine to form larger substances. • SWBAT explain the difference between atoms, elements, molecules, and compounds. • SWBAT use the Octet rule to predict what the stable ions are for each element. • SWBAT use the Octet rule to predict how many electrons each element wants in a chemical bond.

  9. Agenda: • Semester Overview • Unit Overview (Calendar Activity) • Pre-Quiz • Grading Pre-Quiz • How are Atoms Held Together? • The Octet Rule • The HONC Rule • Borax Lab

  10. How are Atoms Held Together? • The nucleus of every atom is positively charged due to its protons. • The electrons surrounding every atom are negativelycharged and attracted to the positive nucleus like a magnet. • When two atoms bond, both of their nuclei attract the electronsbetween them. • This is called a bond!

  11. The Octet Rule • The group number determines the number of valenceelectrons • Atoms are most stable when they have a full valence shell, like the Noble Gases. • Octet Rule – Atoms want 8 electrons and will form bonds to get that many electrons.

  12. The Octet rule • Atoms on the left of the periodic table are more likely to ___________ electrons because they are characterized by low __________________________. • Atoms on the right of the periodic table are more likely to ___________ electrons because they are characterized by high __________________________.

  13. The Octet Rule

  14. The HONC rule • Due to their positions on the periodic table and the Octet Rule you can remember how many electrons these common atoms want by “HONC”ing

  15. Vocabulary ATom Element Compound Molecule

More Related