Define Compare pure substances to mixture
Differentiate between homogeneou
What:
What particles make up an atom?
Draw a picture of an atom:what must be true for any Ender thermic reaction

it's c. elements are placed in rows based on how may valencies electrons have.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

elements make up everything, and they combine to make compounds.

the answer is c

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph