Someone

when
minerals break along straight lines or flat planes we call that

cleavage

sundering

2.

diamond: hardest = : softest

talc

onyx

3.

when a minerals has a shine, we call that

luster

bling

Different isotopes indicate that an element will have different numbers of

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.