2. Atoms & Elements

How many core electrons does an atom of beryllium (Be) contain?

The mass number of Fe^{2+} is 56. How many neutrons are present in a single Fe^{2+} atom?

How many protons are present in a carbon-12 atom?

Which subatomic particle primarily determines the chemical and electrical properties of an atom?

Which of the following are the basic units of matter?

Which event most likely created the atoms of gold found in your jewelry or electronics?

Which two elements are most abundant in stars?

Which part of an atom accounts for most of its mass?

Which of the following best represents the molecular structure of a water molecule?

In an atom, where is the proton located?

Nickel has an atomic number of 28 and a mass number of 59. How many neutrons does a typical atom of nickel-59 contain?

Which quantity determines the identity of an atom?

If scientists analyzed the atoms in a jar of air, which element would they find in the greatest abundance?

Which of the following primarily determines the chemical properties of an element?

Which of the following particles would be repelled by a proton?