Chemicals elements with some of the properties of metals/non-metals.
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Transition metals
Normal metals (group 3 -> group 12).
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Alkali metals
They are very reactive (group 1 except hydrogen).
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Alkaline earth metals
Reactive but not so much as the alkali metals (group 2).
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Noble gasses
Non reactive non-metals (group 18).
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Halogens
Very reactive non-metals (group 17).
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Group
The vertical row of the periodic table and has properties of elements in the same ______ are similar.
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Period
The horizontal row of the periodic table and has properties of elements change accross a _____.
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Periodic law
When elements are arranged in order of increasing atomic number, there are repeating patterns in their physical/chemical properties
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Conductors
Materials that let heat and/or electricity past through.
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Malleable
You can change the shape of a material without breaking it.
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Ductile
Can be bent or stretched easily
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Brittle
Delicate and easily broken.
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Dull
Not shiny.
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great; malleable; ductile; shiny; solids; high
Metals are ____ conductors of heat and electricity. They are also m__, d___ and have a ____ surface. Because metals are ___ at room temperature so they have ___ melting points.
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gasses; brittle; dull; poor
Most nonmetals are ___ at room temperature, but some are b___ and d___ solids. They are ____ conductors of heat and electricity.
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similar; similar
Metalloids are _____ to metals in someways, and _____ to nonmetals in other ways.
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1869
The periodic table was created in ____
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increasing; atomic number; groups; periods
In the modern periodic table, elements are arranged by the _____ of _____. They are laid out in g___ and p___ that highlight patterns in their chemical/physical properties.
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Physical properties
The characteristics you can observe/measure without changing what the substance is made of.
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Chemical properties
How a substance forms compounds with other substances (you cannot observe/measure this without changing what the substance is made of)
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Cations
Types of ions are usually formed by metals and have positive charge.
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Anions
Types of ions are usually formed by nonmetals and have negative charge.
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Ions
An atom that has a positive/negative charge because it has gained/lost electrons. Atoms achiece a stable noble gas electron configuration by either losing all their valence electrons/gaining enough electrons to fill up their outer energy level.
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Noble gas electron configuration
The elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons.
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Ionization energy
The energy needed to remove an electron from an atom (measured in k/mol).