Pre) Metals, Nonmetals, Metalloids

All of these properties describe metals except...

• malleable
• conductors
• brittle 
• shiny

Which element is a metalloid?

• Titanium
• Selenium
• Potassium
• Polonium

Tags

NGSS.HS-PS1-1

Which element is least likely to conduct heat and electricity? 

• O
• Si
• Po
• Ca

Tags

NGSS.HS-PS1-1

Which of the given choices correctly shows the three main groups of elements listed from least conductivity to greatest conductivity?

• Metals, Nonmetals, Metalloids
• Nonmetals, Metalloids, Metals
• Metalloids, Metals, Nonmetals
• Nonmetals, Metals, Metalloids 

Tags

NGSS.HS-PS1-1

A substance that is shiny and a good conductor would be classified as a

• nonmetal
• metalloid
• metal
• metallica

Tags

NGSS.5-PS1-3

A substance that is dull, brittle, and a nonconductor would be classified as a

• metal
• nonnmetal
• metalloid
• metallica

Tags

NGSS.HS-PS1-1

Aluminum can be hammered into different shapes or rolled into flat sheets. This means Aluminum is 

• ductile
• malleable
• lustrous
• high density

Electrons that are free to move in metals

• delocalized electrons
• oxidation number
• chemical bond
• salts

Tags

NGSS.HS-PS2-5

This type of element loses its valence electrons easily.

• metal

• nonmetal

• metalloid

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why do metals conduct electricity so well?

• have a shared "sea of electrons" to carry the current.

• electrons are stuck in place so they can pass the current

• metals do not conduct electricity

• they transfer electrons from one atom to another

Tags

NGSS.HS-PS1-3