How do the atomic mass and atomic number compare for helium?

a) The atomic mass is greater.

b) The atomic number is greater.

c) The atomic mass and atomic number are equal.

d) Helium does not have an atomic number.

Select all that apply to the property of hardness. Hardness is a physical property Hardness is indicative of the strength of chemical bonds between elements. Hardness is determined through a complicated process that requires expensive instruments.

What is the reaction when magnesium becomes magnesium oxide

What part of the divers body is affected the most from pressure change

If a sample of nitrogen gas (N2) contains 6.0 * 1024 atoms of nitrogen, then about how many moles of nitrogen gas are in the sample 3.0 1.0 5.0 2.5

Sound is energy moving in

What is the source for georthermal energy

What senses will we use only with permission from a teacher or adult in Physical Science Labs?

Where is chemistry used?

How is radiation different from convention and conduction?

What is a mutual attraction between the nuclei and electrons in two different atoms called? A) a chemical bond B) a compound C) a cation D) a anion