🌼 Periodic Table Additional Notes 🌼

Question 1

what are the horizontal rows called?

Answer 1

periods

Question 2

how are the horizontal rows organised?

Answer 2

the elements are arranged in an order of increasing atomic number. The physical and chemical properties of each of the elements in a row are different.

Question 3

what are the vertical rows called?

Answer 3

groups or families

Question 4

how are the columns organised?

Answer 4

there are 18 main columns numbered 1-18

Question 5

classify the elements in column 1

Answer 5

The Alkali Metals - all soft, silver-white shiny metals that are highly reactive

Question 6

classify the elements in column 2

Answer 6

The Alkaline Earth Metals - very abundant in the earth’s crust

Question 7

classify the elements in column 17

Answer 7

The Halogens - all gases, or easily become gases

Question 8

classify the elements in column 18

Answer 8

The Noble Gases - all inactive gases that so not react or join with other elements

Question 9

properties of a metal

Answer 9

• good conductors of heat and electricity
• ductile (can be drawn into thin wires)
• malleable (can be hammered into sheets)

Question 10

properties of a non-metal

Answer 10

• poor conductors of heat and electricity
• have dull surfaces
• have low melting points
• non-metals that are solids are brittle and break easily

Question 11

properties of a metalloid

Answer 11

• shiny or dull

- conduct heat and electricity better than non-metals but not as well as metals