Showing posts with label metal. Show all posts
Showing posts with label metal. Show all posts

Friday, November 1, 2013

Periodic Table

In class we learned about the periodic table and this is what I leaned, 

Organization of table 
  • Yellow is most reactive metals 
  • react in  water to release H2 gas
  •  valence electrons in the outermost energy level groups. 
  • elements in any group of the periodic table have similar physical and chemical properties. 
  • the group provides information about the number of valence electrons. 
  • Halogens are the right side of the chart are non metals they easily combine with other metals.
  • Alkinal Metals are on the left side and are metals they react in water and can not be mixed   
 Parts of table

The rows on a periodic table are called periods going horizontal 
the vertical column are named  families.

Trends 

  • Radius gets larger . left to right 



  • The peaks of the chart are the most reactive metals 


Friday, October 25, 2013

Flame Test Lab Questions

Brianna Heaphy 
Pentucket High School
October 25,2013 

1. Errors that can appear well using the flame test. Scientist could mistakenly read the name of the chemical wrong and say the wrong colors. 

2. You need more than one property to find the answer to a substance.

3. the colors in the flames are produced from the type of substance if the substance is a high the color will be blue, red etc. if the substance slow then the color will be yellow, orange.

4. Mn, Sr, Cn, Co, Mg, Ba, Li

5. The element has to be heated by the flame before it can show color because the heat gives the element power and makes the electrons exited making them jumpy which creates light.