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The Periodic Table
NOTES
| Question | Answer |
|---|---|
| The periodic table is arranged like a | calendar |
| A calendar organizes | days, weeks,and months |
| Common days are together in a | column |
| What is a quark? | sub-sub atomic particle |
| One week is together in a | row |
| In a periodic table, the column is called a | group or family |
| Each group or family shares | common characteristics |
| Each row is called a | period |
| The elements have a variety of properties- one is | chemical activity |
| Some elements are very active or reactive- What does this mean? | They combine easily with other elements |
| Some elements are not reactive- What does this mean? | They cannot react with other elements |
| The elements in the right column are called | The Noble Gases |
| What do the Noble Gases do? | They never combine with any other elements |
| When did Dmitri Mendeleev observe the properties of elements and record what? (date and what he recorded) | 1869 and chemical and physical properties |
| Mendeleev found that some elements had ______ characteristics | the same |
| These two elements irritate the eyes. | Cl and Fl |
| These to metals are shiny( but tarnish easily) | Ag and Cu |
| dulling appearance of a shiny metal when it oxidizes | tarnish |
| Metals which oxidize easily are | silver, brass, bronze, copper, and iron |
| Mendeleev recorded ________ and________. | atomic mass and bonding power |
| Atomic mass means | the density of an atom |
| The Atomic mass is based on | hydrogen which is the lightest element |
| Atomic mass unit is the unit used to measure atoms based on ___________ which has the AMU of __ | Hydrogen; 1 |
| Bonding power (which means____)is based on____. | reactivity; the number of chemical compounds an element can form |
| __________ saw the atom as a solid sphere. | Dalton |
| _________ saw the electrons but saw them attached to a solid sphere, but he knew about the______ AND ________ ________ | Thompson; positive and negative charges |
| ____________ saw a center and called it a nucleus and saw the movement and orbiting of an atom. | Rutherford |
| ____________ saw the protons and neutrons in the center. The electron cloud is caused by movement of the atom. The electron movement causes heat and heat is energy. | Bohr |
| The nucleus is the ______. | core |
| The core contains ____________ ( ) and ___________ ( ) | protons; + ; neutrons ; -; |
| A proton has __________ times the mass of an electron. | 2000 |
| Most of the mass of an atom is ___ | inside the nucleus |
| __________ gives atoms a charge. | protons and electrons |
| What is the atomic number? | number of protons in the nucleus; every element has a different number of protons, so periodic table is listed by the atomic number |
| Electrons are not included in the ________ or _____ | mass or number |
| Electrons are not part of the nucleus so... | not part of the mass's number |
| Electrons can be __________, _______, or ________ | lost, shared, or transfered |
| There are over ____ squares on the table. | 100 |
| Each square represents __________. | one element |
| Each square includes: | atomic number, chemical symbols name, atomic mass |
| Protons are used as _______. | the atomic number because protons never change. |
| An element's properties can be predicted depending on... | where they are on the periodic table |
| Groups or families are in ________. | 18 vertical columns |
| The group is named by... | the first element on the column |
| Each group reacts _______ with other groups. | differently |
| Group 1 is... | metals |
| Group 1 reacts by doing what with water? | violently |
| Na will ____________ in a bowl of water but NaCl ___________s | dissolves nicely |
| Group 11 reacts __________ with water or not at all | slowly |
| Group 18 ________ react because ___________ are filled | does not; their electro levels |
| The _________ in the valence determines it's bonding. | number of electrons |
| The elements in the same group have ________ number of electrons in the outer levels. | the same |
| Electron levels are lettered from the ____________________. | inside out |
| Levels can hold a ____ number of electrons. | certain |
| K can hold _ electrons. | 2 |
| L can hold _ electrons. | 8 |
| M can initially hold _ electrons. | 8 |
| Elements in the same period have _______ number of electron levels. | same |
| Sodium fluoride | prevents cavities |
| calcium fluoride | tooth polish |
| sodium chloride | table salt |
| Group= | family |
| involved in the transfer or sharing of electrons | valence electron |
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surfergurl
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