[Yosemitest]

"1*10^-1.0 m, or 100 cm. The peak particle size on that chart is about 1 cm or less.",

Wouldn't that be 1 decimeter ?

deci- (d-) 10-1
1 tenth

centi- (c-) 10-2
1 hundredth

milli- (m-) 10-3
1 thousandth

micro- (µ-) 10-6
1 millionth

nano- (n-) 10-9
1 billionth

pico- (p-) 10-12
1 trillionth

Notes:
I am often asked about prefixes for other multiples, such as 104, 105, 10-4, and 10-5.
The prefix myria- (my-) was formerly used for 104, but it is now considered obsolete and it is not accepted in the SI.
To the best of my knowledge, no prefixes were ever accepted generally for 105, 10-4, or 10-5.

[Yosemitest]

"1*10^-1.0 m, or 100 cm.
The peak particle size on that chart is about 1 cm or less.",

Wouldn't that be 1 decimeter ?

deci- (d-) 10-1
1 tenth

centi- (c-) 10-2
1 hundredth

And 1 time 10 would be 10 decimeters, which is one meter on the negative side.