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Atoms, Elements Comp
Question | Answer |
---|---|
Element | Found on the periodic table, building block of all matter |
Molecule | Two or more atoms bonded together to create something new |
Nucleus | The center of an atom. Protons and Neutrons are found here |
Proton | Positive charge, found in the nucleus |
Electron | Negative charge, found in the electron cloud |
Neutron | Neutral or No charge, found in the nucleus |
Strong Force | Holds the protons and neutrons in the nucleus |
Shell | Level in the electron cloud |
1st shell | Holds 2 electrons |
2nd shell | Holds 8 electrons |
3rd shell | Holds 18 electrons |
Atomic Number | Number of protons or electrons an atom has. |
Atomic Weight (mass) | Number of protons plus the number of neutrons |
How do you find the number of neutrons? | Atomic number -- Atomic weight (mass) you must round to the whole number. |
What does this formula make H2O? | Water molecule |