ATOMS AND PERIODIC TABLE
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| show | ISOTOPE
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| average of the masses of the isotopes of an element | show 🗑
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| the electrons found in the outermost energy level of an atom | show 🗑
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| show | ATOMIC NUMBER
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| show | MASS NUMBER
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| show | PROTONS
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| show | NEUTRONS
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| show | ELECTRONS
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| show | ALKALI METALS (group 1)
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| Which group of elements are stable (unreactive)? | show 🗑
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| show | HALOGENS (group 17)
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| show | SIMILAR PROPERTIES
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| show | GROUP
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| show | PERIOD
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| How many periods and groups are on the periodic table? | show 🗑
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| When elements from groups 1 and 17 combine, the elements from which group are most likely to lose an electron? | show 🗑
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| show | An atom is usually chemically reactive because its outer energy level is not full.
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| show | Dmitri Mendeleev
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| If the atomic number of an element is 9 and the mass number is 20, what is the number of neutrons? | show 🗑
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| What is the name of the element with 20 protons? | show 🗑
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| How many elements are found in nature? | show 🗑
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| The dense, positively charged center of an atom is called the _ | show 🗑
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| The chemical properties of an element depend the the location of these | show 🗑
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| show | group 18
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| show | the ALKALI METALS
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| Group 2 is known as the __ | show 🗑
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| Which group is more reactive, one or two? | show 🗑
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| What's the relationship between valence number and reactivity? | show 🗑
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| show | No, because the # of neutrons is same as # of protons.
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| If an element with atomic # 27 has 26 neutrons, is it an isotope? Explain choice. | show 🗑
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| Name this element: there's 2 electrons in 1st shell, 6 in second shell. | show 🗑
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| Name this element: there's 2 electrons in 1st shell, 8 in second shell, and 5 in last shell. | show 🗑
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| developed nuclear model of atom | show 🗑
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| show | JJ. Thomson
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| show | electrons
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| a charged atom | show 🗑
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| if an element has more protons than electrons, then it's considered to be __ | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
jsolari
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