5.4 Periodic Table

Which group of elements in the periodic table are called the alkali metals?

• Group 1
• Group 2
• Group 7
• Group 6

Why do alkali metals have to be stored in oil?

• To prevent them from reacting with oxygen
• To prevent them from evaporating
• To make them more visible
• To make them easier to handle

How many elements were known when Dmitri Mendeleev created the first Periodic Table?

• 1869
• 60
• 30
• 98

What type of elements are alkali metals?

• Metalloids
• Noble gases
• Non-metals
• Metals

What type of reaction occurs when a halogen displaces a less reactive halide?

• Decomposition reaction
• Combustion reaction
• Redox reaction
• Displacement reaction

What type of elements are halogens?

• Metalloids
• Noble gases
• Metals
• Non-metals

What did Dmitri Mendeleev use to arrange the elements in the Periodic Table?

• Colors
• Shapes
• Masses
• Sizes

What type of elements are found in Group 1 of the periodic table?

• Metalloids
• Noble gases
• Non-metals
• Metals

What did Dmitri Mendeleev leave gaps for in the Periodic Table?

• Sizes
• Shapes
• New elements
• Colors

What are the vertical columns in the periodic table called?

• Periods
• Rows
• Families
• Groups