2. Atoms & Elements

Which statement correctly describes the difference between mass number and atomic number for an atom?

A piece of sodium metal can be described as:

The chemical behavior of an atom is determined by the number and configuration of its:

What is the smallest unit of matter that still retains the properties of an element?

How many protons are present in an atom of carbon-12?

Which of the following best describes the charge of an electron?

What does the atomic number of an element indicate?

Carbon has 6 protons. What is its atomic number?

Astatine has 85 protons. What is its atomic number?

Which of the following is the smallest part of an element that still retains the chemical properties of that element?

Where in the atom is a proton located?

Which subatomic particles primarily affect the stability of an atom?

Which statement about atoms and molecules is correct?

Which of the following is a true statement about atomic nuclei?

Which of the following best describes a molecule?