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CHE107 Chapter 1
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Period
Horizontal row on periodic table
Group
vertical row on periodic table
show similarities in chemical properties
in which directions does metallic character increase on the PT?
Metallic character INCREASES as you go left and down.
Group 1A
Alkali metals
react rapidly with water to form alkaline solution and hydrogen gas
Group 2A
Alkaline earth metals
Group 7A
Halogens
Corrosive
Salt formers
Group 8A
Nobler/inert gases
Volume equivalent of cm
3
1 cm
3
= 1 mL
intensive properties
values that are independent of the amount of matter present
Extensive properties
Properties for which the values are proportional to the amount of matter present
Accuracy
Close to the correct value
Precise
Measurements that are close to each other
Significant figures
1. Non-zero numbers are always significant
2. Zeros between non-zero numbers are significant
3. Zeros before the first non-zero digit are not significant (.0003 has one sig fig)
4. Zeros at the end of a number and after a decimal place are significant.
Author
JustDoughnut
ID
309099
Card Set
CHE107 Chapter 1
Description
Key facts and general concepts, need-to-know items from chapter one. Exam one is on chapters one through four.
Updated
2015-10-06T15:54:23Z
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