Periodic Table

What are the red elements (those on the left)?

• metals

• nonmetals

• metalloids

The identity of an element on the periodic table is determined by the number of _______.

• protons

• neutrons

• electrons

• ions

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

How many valence electrons does group 13 have?

• 1

• 2

• 3

• 12

Organize these options into the right categories

Groups:

(a) Metals

,

(b) Nonmetals

,

(c) Metalloids

• poor conductors

• shiny, silvery solids

• gases, or dull brittle solids

• physcial properties like metals

• right of the metalloids

• semi-conductors

• solids

• malleable and ductile

• chemical properties like nonmetals

• located ot the left of the metalloids

• good conductors of heat and electricity

Which group of elements are nonreactive due to already being chemically stable?

• Group 17

• Group 1

• Group 2

• Group 18

Which pair of properties describes the elements in Group 1?

• They are chemically stable

• They have 8 valence electrons

• They are the most reactive metals

• They are the most reactive non metals

Every element has an unique number of _______________.

• protons

• neutrons

• electrons

• symbols

There are 7 periods on the periodic table.

• True

• False

Match the following group names

• Oxygen group

• Group 15

• Transition metals

• Group 13

• Carbon group

• Group16

• Nitrogen group

• Group 14

• Boron group

• Groups 3-12