Explore Element Properties

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Which group of elements occur only as compounds in nature because they are extremely reactive?

• 1
• 18
• 11
• 16

Which properties are characteristic of the Group 1 metals?

• high reactivity and the formation of unstable compounds
• low reactivity and the formation of unstable compounds
• high reactivity and the formation of stable compounds
• low reactivity and the formation of stable compounds

Tags

NGSS.HS-PS1-2

The yellow atoms are called 

• metals
• nonmetals
• metalloids
• noble gases