1. What Makes Up a Atom?

2. Atoms are the smallest unit of matter. Atoms are the smallest unit of matter. Atoms CANNOT be divided! Atoms CANNOT be divided! Elements are matter made of atoms of only ONE kind.

3. Matter is anything that has mass and takes up space. Matter is anything that has mass and takes up space.

4. Atoms are made up of 3 types of particles: 1.Protons 2. Neutrons 3. Electrons

5. Found in the nucleus. Found in the nucleus. Have a positive charge (+) Have a positive charge (+)

6. Also found in the nucleus. Also found in the nucleus. Have same mass as proton. Have same mass as proton. Neutral charge (no charge). Neutral charge (no charge).

7. Very energetic particles that move rapidly in ALL directions. Found on energy levels outside the nucleus in an electron cloud. Have a negative (-) charge.

8. Smallest part of an atom. Smallest part of an atom. In a neutral atom the number of electrons equals the number of protons. In a neutral atom the number of electrons equals the number of protons.

9. Isotopes are atoms of the same element that have a different number of neutrons. Isotopes are atoms of the same element that have a different number of neutrons.

10. Answer vocabulary fill-ins questions 1, 2,3,4,6, 7 and 9, Answer vocabulary fill-ins questions 1, 2,3,4,6, 7 and 9,