Write true or false next to each of these statements. 2.
a All metals are magnetic.
b Solid non-metals are brittle.
(All metals are solids.
d Metals conduct heat energy.
..
e Non-metals are good conductors of electricity.
mata

Which of these conditions most likely produces an unstable isotope?

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20