C9 Periodic Table

Who famously left gaps in the periodic table for undiscovered elements?

• Dalton

• Mendeleev

• Newlands

• Newton

How are the elements arranged in the periodic table?

• Similar properties

• Same valence electrons in a group

• Increasing atomic number

• All of these

How does the type of oxide change across a period?

• Acidic to basic

• Basic to acidic

• Amphoteric to acidic

• Basic to amphoteric to acidic

Which group contains soft and highly reactive elements?

• 1

• 2

• 7

• 0

How does density change down group 1?

• Decreases

• Increases

• Stays the same

Why does density increase down a group?

• More electrons

• More protons

• More neutrons

• More protons and neutrons

Chlorine + Sodium fluoride →

• Chlorine + Sodium fluoride

• Fluorine + Sodium chlorine

• Chlorine + Sodium fluorine

• Fluorine + Sodium chloride

How are group 7 molecules arranged?

• Giant molecular

• Small ionic

• Diatomic

• Monatomic

Which of the following is a transition metal?

• Tin

• Mercury

• Lead

• Barium

Which of the following are properties of transition metals? Select as many as appropriate.

• High densities

• High melting points

• Form coloured compounds

• Act as catalysts

• Have variable oxidation states