Chemistry - Atomic structure and the periodic table - The periodic table

Question 1

What are the horizontal rows in the periodic table called?

Answer 1

Periods

Question 2

What are the vertical columns in the periodic table called?

Answer 2

Groups

Question 3

What are the main properties of metals?

Answer 3

-High melting point
-Hard (difficult to scratch)
-Malleable (can be beaten into shape)
-Ductile (can be pulled into wires)

Question 4

What are the main properties of non-metals?

Answer 4

-Low melting and boiling points.
-When non-metals are in a solid state, they are usually brittle so you can’t beat them into shape.

Question 5

What are metalloids?

Answer 5

Metalloids are elements in the periodic table that have a mixture of properties of metals and non-metals. These elements are found close to the zig-zag line that separates the metals from the non-metals.

Question 6

How can you determine what group an element is from looking at its electronic structure?

Answer 6

The number of electrons on the outer shell is the number of what group it is in.

Question 7

How can you determine what period an element is from looking at its electronic structure?

Answer 7

The number of shells is the same as the period number.