Please follow the link below, read, watch video, and analyze before answering the questions. DUE NEXT CLASS
QUESTIONS: (Also found in the link)
- What are metallic bonds?
- How do metallic bonds relate to the properties of metals?
- The iron in the metal working picture above (Figure above) is red hot. Infer why the metalworker heats the iron when he shapes it.
- What is electricity? Why can metals conduct electricity?
- What can metals conduct besides electricity?
- How could you use an empty pop can to demonstrate that metals can bend without breaking?
For tomorrow ( 01/23/18 ) :
- Watch the first video and takes notes of the rules for writing dot structures.
- Watch the second video analyze it and write down any questions you may have to discuss tomorrow in class
- Come ready to complete an activity on Lewis dot diagrams.
Show your work
- What is the acceleration of a car that travels south and speeds up from 20m/s to 65 m/s in 30s?
2. If car A goes from 10 to 85 meters in an hour and car B goes from 5 to 25 meters in 20 mins. Who has the greatest acceleration?
3. Emely ran half of 3 meters in 10s , then twice that distance in 8 seconds. At the end of her race, she ran the last 15 meters in 15 seconds.
- What was Emely’s velocity during the first , second and last intervals, average velocity, and acceleration?
- Draw a graph for Emely’s race.
4. What is the difference between constant acceleration and constant velocity.
- Due Date 9th A: Mon. 16th
- Due Date 9th B: Tues. 17th
Please copy the following notes into your notebooks. These will be you end of the chapter review.
The Sun is not solid, nor is it a typical gas. Most atoms in the Sun exist as plasma.
- The Sun’s central core is plasma with a temperature of around 27 million°C. At such high temperatures hydrogen combines to form helium by nuclear fusion, a process that releases vast amounts of energy. This energy moves outward, towards the outer layers of the Sun.
- The energy released in the core travels extremely slowly through the radiative zone.
- In the convection zone, hot material from near the radiative zone rises, cools at the Sun’s surface, and then plunges back downward to the radiative zone. Convective movement helps to create solar flares and sunspots.
After watching this video https://www.youtube.com/watch?v=-NxfBOhQ1CY , please answer the questions found below.
- The Sun is very dense, so is there solid matter at the center? Why or why not?
- What are the inner layers of the Sun and what are their characteristics?
- What are the outer layers of the Sun and what are their characteristics?
- What powers the Sun?
What are the molecular weights of the following compounds?
Calculate the following:
- How many moles are in 22 grams of argon?
- How many grams are in 88.1 moles of magnesium?
- How many moles are in 2.3 grams of phosphorus?
- How many grams are in 11.9 moles of chromium?