1. 6th Grade Life Science Miss Sauer
ATOMS
6th Grade Life Science
Miss Sauer

2. ATOMS Atom: basic building block of matter.
The description of the atom has changed over time.

3. Subatomic Particles
Subatomic Particles: what the atom is made up of.

4. Subatomic Particles
Nucleus: central part of the atom; contains protons & neutrons.
Protons: Positively charged particles in an atom.
Neutrons: Neutral (or no charge) particles in an atom.
Electrons: Negatively charged particles in an atom.

6. Name these parts of the atom…
Nucleus
Electrons

7. IONS
An atom that has more or fewer electrons than it has protons is called an ion.

8. ISOTOPES
Isotopes – atoms with the same number of protons but different numbers of neutrons.

10. ISOTOPES
Isotopes with unstable nuclei are said to be radioactive.

11. ISOTOPES Isotopes with unstable nuclei are said to be radioactive.
Imagine Dragons – Radioactive
(4:21)
Radiation: Unstable nuclei become stable by giving off particles and energy.

12. RADIATION
Radiation: Unstable nuclei become stable by giving off particles and energy.

13. ELEMENTS
Element: is a substance that cannot be broken down into other substances.

14. ATOMIC NUMBER
Atomic Number: The number of protons in an atom.