Chemistry Unit 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Periodic table | Chart of all known elements. Organised according to the structure of the atoms in each element - increasing atomic no. and mass
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| Row | Period
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| Column | Group (Family) - similar characteristics
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| Alkali Metals | Group 1, S(harp), e.g. Na Sodium, K Potassium, very reactive, soft and silvery metal
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| Alkaline Earth Metals | Group 2, S(harp), e.g. Ca Calcium, Mg Magnesium, lustrous silvery metal
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| Halogens | Group 7, P(rinciple), corrosive, non-metals, only 5 elements in group e.g Cl chlorine
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| Noble/Inert Gases | Group 8 (O), P(rinciple), low chemical reactivity, colourless gases e.g. He Helium, Ar Arogon
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| Transitional Metals | e.g. Cu Copper, middle and bottom sections of periodic table, D(iffuse) (N.B. and F(undamental)? at bottom)
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| Properties of metals | Most of the periodic table; hard, shiny, strong, mostly solid, can be magnetic, good conductors, malleable, reactive, make a ringing sound, high density, can be easily combined to make alloys
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| Properties of non-metals | Do not have the properties of metals; i.e. brittle, weak, poor conductors, non-magnetic, no metallic luster, mix of states (solid, liquids and gases), mostly insulators, make a dull sound, low density
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| Number top/top left of elemental symbol | (relative) atomic mass = p + n
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| Number bottom/bottom left of elemental symbol | Atomic number = p
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| Conductive | ability to conduct or transmit heat, electricity or sound
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| Metalloids | Properties in between or a mixture of metals and non-metals. No standard definition and no complete agreement on which elements are metalloids
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| Solids | At room temperature most of the elements are solids
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| Physical change | Change of phase - substance remains the same - e.g. water to ice
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| Chemical change | Chemical reaction takes place and a new substance is formed e.g. water into hydrogen peroxide
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| Alkali Metal example | Sodium Na
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| Alkaline Earth Metal example | Calcium Ca
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| Halogen example | Chlorine Cl
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| Noble Gas example | Helium He
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| Metalloids example | Boron B
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| Transitional Metals example | Copper Cu
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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.
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.
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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