chem
How do you identify the mass number?
#protons + #neutrons
What is the mass of an electron?
0 amu
What is the mass of an neutron?
1 amu
What is the mass of a proton?
1 amu (atomic mass unit)
Bohr's drawing for hydrogen
1 electron 1 proton
First 20 elements and the amount of protons, neutrons, and electrons they contain
1. Hydrogen- P-1, E-1, N-0 2 Helium- P-2, E-2, N-2 3. Lithium- P-3, E-3, N-4 4. Beryllium- P-4, E-4, N-5 5. Boron- P-5, E-5, N-5 6. Carbon- P-6 , E-6 , N-6 7. Nitrogen- P-7 , E-7 , N-7 8. Oxygen- P-8 , E-8 , N-8 9. Fluorine- P-9 , E-9 , N-10 10. Neon- P-10 , E-10 , N-10 11. Sodium- P-11 , E-12 , N-11 12. Magnesium- P-12 , E-12 , N-12 13. Aluminum- P-13 , E-13 , N-14 14. Silicon- P-14, E-14 , N-14 15. Phosphorous- P-15 , E-15, N-16 16. Sulfur- P-16, E-16, N-16 17. Chlorine- P-17 , E-17 , N-18 18. Argon- P-18 , E-18 , N-22 19. Potassium- P-19, E-19, N-20 20. Calcium- P-20, E-20, N-20
What are the first 20 elements, their symbol, and its atomic mass
1. Hydrogen-H- 1 2. Helium- Hi- 4 3. Lithium-Li- 7 4. Beryllium- Be- 9 5. Boron- B- 11 6. Carbon-C- 12 7. Nitrogen- Ni- 14 8. Oxygen- O- 16 9. Fluorine- F- 19 10. Neon- Ne- 20 11. Sodium- Na- 23 12. Magnesium- Mg- 24 13. Aluminum- Al- 27 14. Silicon- Si- 28 15. Phosphorous- P- 31 16. Sulfur- S- 32 17. Chlorine- Cl- 35 18. Argon- Ar- 40 19. Potassium- K- 39 20. Calcium- Ca- 40
Bohr's drawing for neon
10 protons neutrons and electrons
Bohr's drawing for sodium
11 protons 12 electrons 11 neutrons
Bohr's drawing for magnesium
12 protons neutrons and electrons
Bohr's drawing for aluminum
13 protons 13 electrons 14 neutrons
Bohr's drawing for silicon
14 protons neutrons and electrons
Bohr's drawing for phosphorous
15 protons 15 electrons 16 neutrons
Bohr's drawing for sulfur
16 protons neutrons and electrons
Bohr's drawing for chlorine
17 protons 17 electrons 18 neutrons
Bohr's drawing for argon
18 protons 18 electrons 22 neutrons
Bohr's drawing for potassium
19 protons 19 electrons 20 neutrons
Bohr's drawing for helium
2 protons 2 neutrons 2 electrons
Bohr's drawing for calcium
20 protons neutrons and electrons
Bohr's drawing for lithium
3 protons 3 electrons 4 neutrons
Bohr's drawing for beryllium
4 protons 4 electrons 5 neutrons
Bohr's drawing for boron
5 protons 5/6 neutrons 5 electrons
Bohr's drawing for carbon
6 protons 6 neutrons 6 electrons
Bohr's drawing for nitrogen
7 protons neutrons and electrons
Bohr's drawing for oxygen
8 protons neutrons and electrons
Bohr's drawing for fluorine
9 protons 9 electrons 10 neutrons
What is a Lewis dot diagram?
A diagram that has the elements symbol surrounded by the number of valence electrons it has (dots)
How do you identify if an atom is a regular atom or an ion?
Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons or gaining electrons
isotope
Atoms of the same element that have different numbers of neutrons
How do you identify if an atoms is a regular atom or an isotope?
If the number of neutrons in the given atom is different, than it is an isotope.
What is noble gas configuration?
Taking the preceding noble gas and start from there with electron configuration
How do you identify the number of protons?
atomic number
Why do atoms desire to achieve the noble gas configuration?
because it has low energy, so atoms on the left of the periodic table are willing to give away electrons to reach that state, while atoms on the right of it would like to take electrons to reach it
What are ions?
charged particles
What makes an atom neutral in charge?
if it has the same number of electrons and protons
Where is the neutron located in the atom?
inside the nucleus
Where is the proton located in the atom?
inside the nucleus
What is the charge of an electron?
negative
What is the charge of a neutron?
neutral (0) no charge
Where is the electron located in the atom?
outside the nucleus
What is the charge of a proton?
positive
What are the 3 subatomic particles?
protons, neutrons, electrons
is carbon a regular atom or an isotope?
regular atom because carbon has six protons and is atomic number 6
How do you find the number of electrons?
same as the number of protons
How are negative ions formed?
when an atom gains electrons
How are positive ions formed?
when an atom loses electrons
