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Periodic Table
Element Facts
Question | Answer |
---|---|
columns | groups, families |
rows | periods |
How many rows on the periodic table? | 7 |
How many columns on the periodic table? | 18 |
Elements are named after... | scientists and geographical regions |
Who created the periodic table? | Dmitri Mendeleev |
How did Mendeleev arrange the periodic table? | Increasing order of atomic mass |
The only metal that is a liquid | Mercury |
Solid at room temperature | Metals |
Silver-gray | Metals |
The only two metals that aren't silver-gray | Gold and copper |
Good conductors of heat and electricity | Metals |
Metallic luster | Metals |
Malleable | Metals |
Found in all states | Nonmetals |
All elements that are gases at room temperature are... | Nonmetals |
Can have many colors or are invisible | Nonmetals |
Poor conductors of heat and electricity | Nonmetals |
Insulators | Nonmetals |
Left of step | Metals |
Shiny | Metals |
Ductile | Metals |
Right of step | Nonmetals |
Dull | Nonmetals |
Nonmalleable | Nonmetals |
Nonductile | Nonmetals |
Brittle | Nonmetals |
Located close to step | Metalloids |
Properties of metals and nonmetals | Metalloids |
7 metalloids | boron, silicon, germanium, arsenic, antimony, tellurium, polonium |
How many elements does the periodic table have? | 115 |
How many elements are natural? | 94 |
How many elements are man-made? | 21 |
Who rearranged the periodic table? | Henry Moseley |
How did Moseley put the elements in order? | Increasing atomic number |
4 pieces of information in each box of the periodic table? | atomic number, atomic mass, chemical symbol, element name |
Group 1 | Alkali metals |
Group 2 | Alkaline-earth metals |
Groups 3-12 | Transition metals |
Group 13 | Boron group |
Group 14 | Carbon group |
Group 15 | Nitrogen group |
Group 16 | Oxygen group |
Group 17 | Halogens |
Group 18 | Noble gases |
Shiny, reactive metals | Lanthanides |
All atoms are radioactive | Actinides |
Elements after 94 plutonium are not occuring in nature but produced in labs | Actinides |
In group 1 because it has 1 electron in outermost energy level | Hydrogen |
Physical properties are more like properties of nonmetals | Hydrogen |
States that "the chemical and physical properties of elements are periodic functions of their atomic numbers" | Periodic law |