Context: All matter is made of atoms. Atoms are very small pieces of matter. But they are not the smallest pieces of matter. Atoms are made of even smaller pieces, or particles.
Some of these particles have a property called electric charge. There are two types of electric charge: positive and negative. Particles with a positive electric charge are called positive charges. Particles with a negative electric charge are called negative charges.
Which of the following statements is true?
A. Electric charge can be positive or negative.
B. Particles with any electric charge are called positive charges.
C. The smallest piece of matter is called an atom.
Choose the right answer from the options and respond with its letter.
Answer: A