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Elements
Term | Definition |
---|---|
At room temperature, most metals are in what state? | solid |
The sun is made up mostly of | hydrogen |
Which group of elements share characteristics with both metals and nonmetals? | metaloids |
A material is said to be ductile if it | can transfer heat or electricity to another metal. |
Most metals are NOT | liquid at room temperature |
The elements that do NOT ordinarily form compounds are | noble gases. |
Stars are made of a gas-like state of matter that conduct electricity called | plasma. |
Which group contains the most elements? | metals |
In the periodic table, the most reactive metals are found | in Group 1, the first column on the left. |
From the element's location in the periodic table, you can predict | properties |
In an atom, the number of protons usually equals the number of | electrons. |
From an element's location in the periodic table, you can predict | properties |
Because atoms are so small, | scientists create models to describe them. |