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| Front-side | Reverse-side |
|---|---|
| _ can be produced by bombarding protons with protons | Quarks |
| __ are poor conductors of heat and electricity | nonmetals |
| 2 isotpes of carbon are carbon 12 and carbon 14. These isotopes differ by two __ | nutrons |
| A capital Letter or combination of a capital letter and lowercase letter that is used to represent an element is called a | Chemical symbol |
| A certain atom has 26 protons, 26 electrons and 30 neutrons… its mass number is __ | 56 |
| A chart that shows the classification of elements is called the | periodic table |
| a chemical symbol represents teh __ of an element | Name |
| A diagram showing only outer energy level electrons is called a | electron diagram |
| a particle that moves around the nucleus is a | electron |
| a total count of the neutrons and protons in an atom is the | mass number |
| according to present atomic theory the location of an ___ in a atom is best represented by a probability cloud | electron |
| an average of the masses of all the isotpoes that occur in nature for an element is | average atomic mass |
| As you move from left to right ina row of teh periodic table metallic properties increase or decrease | increase |
| Atoms of the ame element but with different numbers of neutrons are | Isotopes |
| Atoms of the same element with different numbers of neutrons are called | isotopes |
| Dot diagrams are used to represent | outer electrons |
| Each energy level of an atom has a maximum number of __ it can hold | electrons |
| Elemenets that are found on the left side of the periodic table are | metals |
| Elements arranged in a vertical columns in the periodic table are called _ | periods |
| Elements having 3 or less electrons in the outer energy level are classified as | metals |
| Elements in groups 3- 12 are called | transition elements |
| Elements in the middle of the peridoic table, groups 4- 7 are called | transition elements |
| Elements that have soem proporties of both metals and nonmetals are | metalloids |
| Horizonal rows of the periodic table are called | periods |
| number of protons in an atom | atomic number |
| Particles of matter that make up protons and neutrons are | quarks |
| protons and neutrons can be subdivided into _ by colliding them | nucleus |
| Teh central core of an atom is | the nucleus |
| Teh horizontal row of elements are called | periods |
| teh region around the nucleus occupied by the electrons is a | electron cloud |
| teh region around the nucleus occupied by thte electrons is called the ___ | negative zone |
| Teh sum of the number of protons and teh number of neutrons in an atom is the__ | mass number |
| Teh weighted average of the mass number of all the isotopes that occur in nature for a particular element is the average | atomic mass |
| the __ is used to accelerate protons in the study of subatomic particles | tevatron |
| The atomic masses of the elements are not whole calue numbers because teh existence of __ | isotopes |
| The chart that shows classifications of elementsaccording to their properties is | teh periodic table |
| the identity of an element is determined by its number of | protons |
| the mass of a ___ is about equal to the mass of a protron | nutron |
| The max number of electrons in the second energy level of an atom is _ | 8 |
| The number of protons in an atom is call the | atomic number |
| The particles that move about the nucleus and have a negative charge are | electrons |
| The symbol for chlorine | Cl |
| vertical columns of elements are called | groups |