Properties and Group Trends Flashcards
Metallic or Nonmetallic? Colorful
NM
Metallic or Nonmetallic? Solid at room temp
M
Metallic or Nonmetallic? Dull (not lustrous)
NM
Metallic or Nonmetallic? Lose electrons easily
M
Metallic or Nonmetallic? Poor conductor of heat and electricity
NM
Metallic character
Tendency to give away electrons (level of reactivity)
Nonmetallic character
Tendency to accept electrons (level of reactivity)
Down a group, metallic character __________
Increases
Across a period, metallic character __________
Decreases
Down a group, nonmetallic character ________
Decreases
Across a period, nonmetallic character ___________
Increases
Greater metallic character makes its aqueous mixture more ________
Basic
Greater nonmetallic character makes its aqueous mixture more ________
Acidic
6 definite metalloids
B, Si, Ge, As, Sb, Te
Element exhibiting partial nonmetallic character is a _______
Metalloid
Hydrogen is classified as a _________
Nonmetal
Group 1
Alkali metal
Group 2
Alkaline earth metal
Alkali metals hard or soft?
Soft
Alkaline earth metals hard or soft?
Hard
Alkali metals high or low melting point?
low
Alkaline earth metals high or low melting point?
high
Compare Alkali metals to Alkaline Earth metals density
Alkaline has higher density but both are relatively low
Why is specific heat trend the opposite of density trend?
Heat is transferred from particle to particle and it’s easier if particles are close