Atomic Structure Video Notes
Atomic Structure – the arrangement and number of parts of an atom (protons, neutrons and
electrons)
nucleus – the center of an atom, where the protons and neutrons are
protons – positively charged particles in the nucleus
neutrons – neutrally charged (no charge) particles in the nucleus
Elements in the Periodic Table are ordered by the atomic number of the element.
atomic number = the number of protons
atomic mass = number of protons + number of neutrons
isotopes – atoms of the same element with different numbers of neutrons
electrons – negatively charged particles in the electron cloud surrounding the nucleus
Atomic Structure Video Notes
Atomic Structure – the arrangement and number of parts of an atom (protons, neutrons and
electrons)
nucleus – the center of an atom, where the protons and neutrons are
protons – positively charged particles in the nucleus
neutrons – neutrally charged (no charge) particles in the nucleus
Elements in the Periodic Table are ordered by the atomic number of the element.
atomic number = the number of protons
atomic mass = number of protons + number of neutrons
isotopes – atoms of the same element with different numbers of neutrons
electrons – negatively charged particles in the electron cloud surrounding the nucleus
Video Questions: Atomic Structure
1. Atomic __________________________ refers to the arrangement and the number of smaller
particles in an atom.
2. The _________________________ is the center or core of an atom.
3. _________________________ are positively charged particles located in the nucleus.
4. Neutrons have a ________________________ charge.
5. __________________________ are atoms of the same element with different numbers of
neutrons.
6. _________________________ are subatomic particles with a negative charge.
7. The sum weight of protons and neutrons in an atom is its atomic ________________________.
8. Elements in the periodic table are ordered according their atomic _________________________.
9. _________________________ are the most common elements on the periodic table.
10. Elements in the family called the alkaline earth metals are very _________________________.
Video Questions: Atomic Structure
1. Atomic __________________________ refers to the arrangement and the number of smaller
particles in an atom.
2. The _________________________ is the center or core of an atom.
3. _________________________ are positively charged particles located in the nucleus.
4. Neutrons have a ________________________ charge.
5. __________________________ are atoms of the same element with different numbers of
neutrons.
6. _________________________ are subatomic particles with a negative charge.
7. The sum weight of protons and neutrons in an atom is its atomic ________________________.
8. Elements in the periodic table are ordered according their atomic _________________________.
9. _________________________ are the most common elements on the periodic table.
10. Elements in the family called the alkaline earth metals are very _________________________.