Science extra credit minerals

What is one of the 5 things a rock has to have to be a mineral?

• formed in a lab

• Solid

• organic

• liquid

What is density?

• I don't know

• Ratio of a minerals mass to its volume

• [:

• Volume divided by density

What is color [rock definition]?

• color if colors

• What something looks like

• The visible appearance of a MINERAL

• Hmmmmm...

What is hardness?

• Hardness

  duh.

• I i i ummmmmm

  let me look at my notes

• How hard a pencil is

• Refers to the ability to resist scratching

What mineral is SUPER hard to scratch?

• CALCITE

• DIAMOND

• TALC

• GYPSUM

What is crystal structure?

• The arrangment of atoms/molecules that make up a structure

• heh

• Atoms making food

• i want lunch

What is luster?

• Gold

• The shiny surface of a rock

• I really don't know

• The ability to scratch a rock because it has a smooth surface or somethign like that. I bet you are going to pick this answer.

What is Cleavage?

• A split or crack in a rock or mineral

• earthquakes

• lighting

• cleaning

What is the point of a hardness scale?

• IDK

• It puts minerals in order from hardst to softest

• It puts minerals is order

• It put minerals in order from shiniest to dullest

What is the hardness of a penny

• 0.1

• 9.7

• 456.8

• 3.5