What is the correct way to pick up a hot test tube?
use oven mitts and pick it up with your hands.
use tongs to transfer the test tube to a test tube holder.
allow the test tube to cool and then use tongs to transfer it.
use oven mitts with tongs to transfer the test tube to a test tube holder.

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

The fact that the total amount of energy in a system remains constant is a(n)