T-Chemistry Midterm

How do you identify valence electrons?

• by looking at the element's position on the periodic table

• by adding the atomic number

• by the energy level around the nucleus

• by the configuration

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Examples of Alkali metals are...

• brittle and colorless

• low melting and boiling point

• highly reactive, soft, shiny

• tasteless and oderless

Alkaline Earth Metals are...

• soft, malleable, and low melting point

• colorless, odorless, and tasteless

• low boiling and melting point

• silvery - white, malleable and ductile

Transition Metals are ...

• shiny, brittle, solids at room temp

• high melting points, strong metallic bonds, and good conductivity

• colorless, odorless, and tasteless

• highly reactive

Identifying the element's atomic number and then arranging the electrons in energy levels around the nucleus creates...

• Chemistry Model

• Isotope Model

• Bohr model

• Halogen Model

Tags

NGSS.HS-PS1-1

Post transition metals are...

• soft, malleable, and low melting points

• high resistance to corrosion and oxidation

• highly reactive, soft and shiny

• brittle at room temp

Metaloids are...

• silvery - white, malleable and ductile

• soft, malleable, and low melting points

• high resistance to corrosion

• shiny and brittle at room temp

Halogens are ...

• shiny and brittle solids at room temp

• low melting and boiling points and high electronegativity

• odorless, colorless, and tasteless

• high resistance to corrosion and oxidation

Noble gases are...

• low melting points and boiling point

• soft and malleable

• highly reactive, soft and shiny

• colorless, odorless, and tasteless

Noble Metals are ...

• high resistance to corrosion and oxidation

• soft, malleable, and low melting points

• silvery-white, malleable and ductile

• highly reactive, soft, and shiny