Which of these are found in experimental investigations, but not in descriptive investigations? Check all that apply. a question
a hypothesis
variables
a control group
a procedure
a conclusion

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

a

answer: mole of the gas

answer: mole of the gasexplanation:

answerlinnaeus;