I NEED HELP ASAP!! What is the difference between the experimental group and a control group?​

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.