Thursday: atoms 1) smallest unit of matter: 
 2) center of atom: 
 3) positive particles in center of atom: 
 4) neutral particles in center of atom: 
 5) negative particles surrounding the center of the atom: 
 6) electrons in the outermost energy level. they determine the reactivity of the atom.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

pie chart because it is in percents ( % )