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Camponeschi
Chemistry - part 2 - targets 3, 6 (a,b,c) & 7 (a, b, c) (periodic table)
| Question | Answer |
|---|---|
| How did Mendeleev organize the periodic table? | he lined up the known elements by atomic mass and noticed a repeating pattern of other chemical and physical properties. He placed thsoe elements in the same column (family). |
| What challenges did Mendeleev face when trying to organize the Periodic Table? | He did not know all the elements that existed and some of the information for the elements was incorrect. |
| Describe the pattern within the periodic table for atomic number. | increases by one as you move across a row (period). |
| Describe the pattern within the periodic table for atomic mass. | increases as you move across a row/period. |
| Describe the pattern within the periodic table for a period. | elements in a row increase in atomic number and mass |
| Describe the pattern within the periodic table for a family. | share similar chemical and physical properties. |
| By looking at the periodic table, how can you determine the atomic number? | It is the whole number |
| By looking at the periodic table, how can you determine the atomic mass? | It is the decimal number |
| By looking at the periodic table, how can you determine the element symbol | It is the largest letters |
| What is a period | a row on the periodic table |
| what is a family | a column on the periodic table |
| What is the atomic number for sodium? | 11 |
| What is the atomic mass for fluorine? | 18.998 |
| What is the chemical symbol for oxygen? | O |
| Which element has an atomic number of 26? | iron |
| Which element is in the same family as boron, aluminum or carbon? | aluminum |
| which element is in the same period as chlorine? | sulfur |
| Is potassium more like sodium or calcium? | sodium - in same family |
| which element has only one proton? | hyodrogen |
| which element has 10 protons? | neon |
| What are the three parts of an atom? | proton, neutron, electron |
| Where are the protons located? | nucleus |
| Where are the neutrons located? | nucleus |
| Where are the electrons located? | moving around the nucleus |
| What is the charge of a proton? | positive |
| What is the charge of a neutron? | Neutral |
| What is the charge of an electron? | negative |
| What makes one atom from one element different than an atom from a different element? (for example, one oxygen atom compared to a carbon atom) | the number of protons in the nucleus |
| What is atomic number? | number of protons |
| What are valence electrons? | the most loosely held electrons (farthest from nucleus) |
| What give an atom its mass? | protons + neutrons |
| What gives an atom its volume? | electrons |
| What type of observations do we make on atoms? | indirect observations |
| what is the pattern as you go across a period? | metal --> metalloid --> nonmetal |
Created by:
camponel
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