12. Which of the following properties are Physical (P) and which are Chemical (C)? ___Color ___Luster ___Magnetism ___Viscosity ___pH

___Electrical conductivity ___Thermal conductivity ___malleability ___Hardness

___Melting/Boiling Point ___Reactivity ___Flammability ___Density

___Solubility

13. Describe the difference between a physical change and a chemical change.

P,p,c,p,c,c,c,p,p,c,c,c,p,p

Explanation:

I am 98%sure these are right, tell me if it helped :)

all the things r phys and the stuff like conductin r chem ur welcom e

Explanation:

a patient chooses to not take a beneficial medical treatment.

explanation:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.