Periodic Table

Groups on the periodic table are __________.

• Horizontal Rows

• Vertical Columns

All elements in the same group have the same number of valence electrons

• Yes

• No

Organize these options into the right categories

Groups:

(a) Metals

,

(b) Nonmetals

,

(c) Metalloids

• poor conductors

• gases, or dull brittle solids

• good conductors of heat and electricity

• chemical properties like nonmetals

• located ot the left of the metalloids

• malleable and ductile

• solids

• semi-conductors

• physcial properties like metals

• right of the metalloids

• shiny, silvery solids

Which of the following are located along a dividing line that looks like a staircase?

• metals

• metalloids

• non-metals

• alkali metals

What are the horizontal rows on the periodic table called?

• Valence electrons

• Elements

• Periods

• Groups

Which group of elements are the most reactive metals?

• Group 2

• Group 1

• Group 13

• Group 18

The chemical properties of an element are determined by the number of

• energy levels

• valance electrons

• isotopes

• ions

The periodic table is arranged in order of...

• increasing atomic number

• increasing atomic mass

• decreasing atomic mass

• decreasing atomic number

Which of the following is not a property of metalloids?

• poor conductors of electricity

• have properties of metals & non-metals

• solids at room temperature

Match the following to the correct step when drawing a Bohr Model

• 4

• Place the p⁺ & n⁰ in the nucleus

• 2

• Determine the number of p⁺ by the element's atomic #

• 1

• Put the electrons on each level, filling from inside out

• 5

• Use the period number on the periodic table to determine the number of energy levels in the electron cloud

• 3

• Determine the number of n⁰ by subtracting mass # - atomic #