What tools can you use to conduct a scratch test that uses the Mohs Hardness Scale to determine the object's hardness? There is more than one right answer. Check all that apply. A screwdriver
A fingernail
A piece of chalk
A diamond
A copper penny
A steel nail

Explanation:

this may be wrong i have never saw this but ill try i think a steel nail a screwdriver and a diamond

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

mark brainliest and have a great day!

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.