Select all that apply.
A beta particle:

-is electromagnetic energy
-is an electron
-has zero charge
-is emitted from the nucleus
-has a +2 charge
-has a -1 charge

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

An observation that requires measurement is called quantitative observable or qualitative

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks. energy was destroyed inside the blocks. energy was absorbed into the blocks from outside the system. energy was transferred from the warmer block to the cooler block.