2. Atoms & Elements

Approximately how many atoms of copper are present in a typical U.S. penny?

Which atom plays a crucial role in providing your heart with the energy it needs to beat?

Sand and computer chips share which element as their basic component?

Which term defines the simplest form of matter that has unique chemical properties?

The reactivity of an atom arises from:

Which particles are found in the nucleus of an atom?

Which of the following best describes the role of electrons within an atom?

What is the atomic number of a carbon atom that has 6 protons?

How many electrons does a neutral atom of carbon contain?

Which of the following is a characteristic of the part of the atom labeled "b" if "b" represents the nucleus?

Which of the following is considered the fundamental subunit of matter?

Which of the following best completes the statement: An element is made up of ____?

What is the mass number for an atom of osmium containing 76 protons and 113 neutrons?

Which of the following is the number of protons in a silicon (Si) atom?

Roughly what percentage of an atom's volume is occupied by its nucleus?