1. Ch.1 Matter and Change
1.3 Elements

2. Elements elements are pure substances
organized by properties on periodic table

3. Elements each square shows the name and letter symbol for each element
usually the symbols relate to the English names but some come from older names (usually Latin)
Ex: gold’s symbol is Au from aurum
Ex: iron’s symbol is Fe from ferrum

4. Periodic Table Groups Periods horizontal rows also called families
vertical columns
numbered 118
have similar chemical properties
Periods
horizontal rows
properties changes consistently across a period
numbered 1-7

5. Periodic Table

6. Periodic Table
two rows below the periodic table are the lanthanide and actinide series
these rows fit after #57 and #89
they are only at the bottom to keep the width of the chart smaller

7. Types of Elements Metals
an element that is a good conductor of electricity
at room temperature, most are solids
malleable- can be rolled or hammered into sheets
ductile- can be made into wire
high tensile strength- can resist breakage when pulled
most have silvery or grayish white luster

8. Types of Elements Nonmetals
an element that is a poor conductor of heat and electricity
many are gases at room temperature
some are solids: usually brittle, not malleable

9. Types of Elements Metalloids
an element that has some characteristics of metals and nonmetals
appear along staircase line
B, Si, Ge, As, Sb, Te
all are solids at room temperature
less malleable than metals but less brittle than nonmetals
are semiconductors

10. Types of Elements Noble Gases generally unreactive gases
in far right column of periodic table (Group 18)