Pease hurry metallic
black markings on
the streak plate
softer than a
fingernail
(hardness less
than 2
harder than a
fingernail
(hardness greater
than 2
magnetic
nonmagnetic
harder than the
streak plate
(hardness greater
than 7
nonmetallic
slippery
feeling
softer than an iron nail
(hardness loss
than 4.5)
density near
3 g/ml
not slippery
feeling
density near
2 g/ml
quartz
gypsum
pyrite
magnetite
graphite
fluorite
talc

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

What four properties do all waves have in common