matter

2. An atom that gains or loses one or more electrons from its outermost energy level has a net electric charge
4. Anything that has volume and mass.
6. a tiny particle with approximately the same mass as a proton, but it has no electrical charge.
8. The center of an atom
9. The number of protons in an atom’s nucleus

1. a substance that cannot be broken down into simpler substances by physical or chemical means.
2. Atoms of the same element that have different mass numbers
3. What is a 4 letter word for particle of matter?
4. The sum of the protons and the neutrons in an atom’s nucleus
5. a tiny particle that has mass and a positive electric charge.
7. has little mass, but it has a negative electric charge that is exactly the same magnitude as the positive charge of a proton.