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ATOMS!
periodic table, atoms,ions, etc..
Question | Answer |
---|---|
in the Modern Periodic Table, elements are arranged according to... | atomic number |
Name the particles that make up a atom and identify their charge if any. | protons + neutrons none electrons - |
describe how and where electrons travel in an atom | Electrons travel fast around the nucleus in the electron cloud |
how do atoms bond together? | ???? idk yet |
An atom that has 10 negative electrons and 8 protons has a charge of | negative 2 |
What is a charged atom? | ion |
The number of electrons in an atom ____ across each period of the periodic table | increase |
What is the events in order that would appear on a timeline? | 1.Crookes' experiments with cathode-ray tube 2.Thomson's evidence for the existence of positive particles in atoms. 3.Rutherford's metal foil experiment 4.discovery of the neutron |
"periodic table": 6 C 12 | 6 - atomic number C - Symbol 12 - atomic mass |
What contains only one kind of atom? | elements |
To find the number of neutrons you must... | Subtract the atomic number from the atomic mass |
___ is responsible for holding the neutrons and protons together in the nucleus | strong force |
What is the symbol for mercury? | Hg |
a _____ is a row of elements in the periodic table whose properties change gradually and predictably | period |
the____ is the number of protons in the nucleus of an element's atoms | atomic number |
Explain why a neutral atom must have the same number of protons and electrons? | A neutral atom must have the same amount of protons and electrons so they cancel each other out, leaving it with no charge. |