1. Subatomic Particles By Joshua Cohon

2. Nuclei • The nucleus lies at the center of the atom. • It contains the protons and neutrons. • It contains positive charge and no charge, so it is a positive charge. • Plural for nucleus is nuclei.

3. Protons • Protons have a positive charge. • The atomic number of an element tells how many protons there are in one of its atoms. • The element that has the most protons is unniloctium at 118 protons.

4. Neutrons • Neutron are neutral. • That means that they have no charge. • Sometimes, electrons and protons form together to make neutrons.

5. Electrons • Electrons orbit the nuclei. • Electricity is formed by electrons flowing. • Sometimes, they are found outside of atoms.

6. Quarks • Quarks build up subatomic particles. • There are three of them in all nuclei- contained particles. • In pions, there are two of them.

7. Fun Facts • When you see anti in front of the name of a subatomic particle, it is antimatter, the complete opposite of matter! • 1 million atoms stretch 1 inch!

8. Questions • How many quarks are in a proton? • Is a pion nuclei-contained? • What color quarks are there?