CHEM 5.4 Patterns and the Periodic Table

Question 1

Column 1 and characteristics

Answer 1

Alkali Metals: soft and very reactive

Question 2

Column 2

Answer 2

Alkaline earth metals: silvery-white and moderately reactive metals (reacts with some, not others)

Question 3

Columns 3 to 12

Answer 3

Transition metals

Question 4

Column 17

Answer 4

Halogens: they are the most reactive

Question 5

Column 18

Answer 5

Noble gases: so stable, they rarely react (inert gases)

Question 6

The periodic table is arranged according to

Answer 6

Increasing atomic number (number of protons)

Question 7

Reactivity

Answer 7

Likelihood of an element to react.

Question 8

Metals are on the left or right ? What are their characteristics ?

Answer 8

Left
Room temperature: Solid
Lustre: Shiny
Malleability: Generally malleable
Conductivity: Conductors

Question 9

Non-Metals are on the left or right ? What are their characteristics ?

Answer 9

Right
Room temperature: Solid, Liquid, Gas
Lustre: Dull
Malleability: Brittle (if solid)
Conductivity: Insulators

Question 10

What is a metalloid ?

Answer 10

Either metal or non-metal but shares properties of both (marked by the staircase).

Question 11

Atoms are ( ), with equal number of ( ) and ( ).

Answer 11

neutral, protons, electrons

Question 12

What is the difference between Bohr and Bohr Rutherford diagrams ? (Practice drawing them)

Answer 12

Bohr Rutherford has protons and neutrons in nucleus. Bohr has element symbol in nucleus.