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Atoms& Periodic T
| Question | Answer |
|---|---|
| 3 Subatomic Particle | Protons,Neutrons, and Electrons |
| Location for protons | In the Nucleus |
| Location for Neutrons | In the Nuclues |
| Location for Electrons | Outside of the Nucleus |
| Protons Charge | Positive |
| Neutrons Charge | No charge |
| Electrons Charge | Negative |
| Protons, neutrons, and electrons mass | Protons- 1 amu neutrons-1amu electrons- very small small |
| Why do Electrons form a cloud ? | They Never stay in one spot, move everywhere quickly |
| What is the Atomic number of an atom? | The number of protons in the nucleus |
| what is the atomic mass in an atom | The total number of protons and neutrons in the nuclues |
| How do we figure out the number of electrons in an atom | electrons- same as atomic # Protons-atomic # Neutrons- atomic # minus atomic mass |
| Why do we measure the atomic mass of an atom in amu? what does amu stand for? | atomic mass unit. to small to measure with everyday untis |
| how many electrons does it take to equal the mass of one proton? | 2,000 |
| What are the Valence Electrons | Electrons most loosely held outside of the shell |
| how many valence electrons can fit in the 1st 2nd and 3rd energy levels of an atom? | 1st shell-2second shell- 8 and 3rd shell- 8 |
| Which Model of the atom was the first one? | Dalton |
| which model of the atom came next | Thompson |
| Which model was the first to have a nucleus | Nagaoka |
| Which model of the atom showed electrons in energy levels surronding the nucleus | Bohr |
| Which model showed electrons moving arounds the nucleus so fast its impossible to determine where the electron is at any given time? | Modern Model |
| Many Properties of the atom and therefore the element depend on the number of _____ it has. | Valence Electrons |
| Electron dot structures show only the _____ electrons in an atom | Valence |
| Can be observed with out changing the substance into something else | Physical Properties |
| Can only be observed when a substance interacts with another substance | Chemical Properties |
| How did Mendeleev arrange the elements on the periodic table | Increasing the Atomic Number |
| Which has more properties in common, elements in a group or elements in a period | Group/ Family |
| How is helium different than the other elements in group 18? | Has only 2 valence electrons |
| Most on the elements on the periodic table are___ which are located to the __ of the zig-zag line. The _____ are located to the right of the zig-zag line. Right along the Zig-Zag line are the ______ which have properties of both metals and non metals | Metals, Left. Nonmentals, Right. Metalloids |
| 5 properties of Metals | Give up Electrons in Chemical Reaction Malleable cluctile good conducter of heat and electricty some attracted to magnets |
| 5 properties of Non Metals | Dull, not shiny crumble easily not good conducters of heat,& electricity Not attracted to Magnets Share or gain Electrons |
Created by:
kiersten42
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