Reading the Periodic Table

As you move down a group, atomic radius increases because - 

• you add more and more neutrons
• you add more and more protons
• you add more and more shells (energy levels)
• you add more atomic mass

Mendeleev was the first person to arrange the elements into a table. How did he arrange the rows?

• alphabetical 
• density
• melting point
• atomic mass

Which of the following will have similar properties?

• O, S, Se

• O, F, Ne

• N, Ne, Na

• H, K, P

Each column in the periodic table is called a _________ .

• period
• group
• cluster
• unit

Elements in the same group have : (2 correct answers)

• Similar chemical properties

• Similar names

• Same number of outer (valence) electrons)

• The same number of protons

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Find an element with similar chemical properties to Barium (Ba).

• Ca an Ra, because they are in the same group and have similar chemical properties.

• Cs and La, b/c they are in the same period number.

• Ca and Y, b/c they are 90 degree angle and have similiar properties.

The blue elements (left side) are called 

• metals
• nonmetals
• metalloids
• noble gases

The yellow elements (right side) are called 

• metals
• nonmetals
• metalloids
• noble gases