What is the physical state of each of these materials at room temperature?
a. gold
b. gasoline
c. oxygen
d. neon
e. olive oil
f. sulfur
g. mercury

a. solid
b. liquid
c. gas
d. solid
e. liquid
f. solid
g. liquid

Matter and substance are definitely related. All substances are matter but all matters are not substance. A matter can consist of numerous substances. Matter is generally a loose term used in respect to a substance. Any physical object can be casually called a matter. Matter and substance are sometimes used for the same context, but it is completely wrong. Numerous examples have already proved that a matter may or may not be a substance depending on its physical nature, but a substance is always a matter.

The answer to this problem is. 67

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water