Periodic Table 7.PS.1.5

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Science
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7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What are metalloids?
Back
Metalloids are elements that have properties of both metals and nonmetals. They are found along the zigzag line on the periodic table.
2.
FLASHCARD QUESTION
Front
What does the atomic number represent in the periodic table?
Back
The atomic number represents the number of protons in an atom of an element.
3.
FLASHCARD QUESTION
Front
Which elements are classified as halogens?
Back
Fluorine, chlorine, bromine, and iodine are classified as halogens.
4.
FLASHCARD QUESTION
Front
What is the significance of the zigzag line on the periodic table?
Back
The zigzag line on the periodic table separates metals from nonmetals and indicates the location of metalloids.
5.
FLASHCARD QUESTION
Front
In a neutral atom, how do the number of protons compare to the number of electrons?
Back
In a neutral atom, the number of protons equals the number of electrons.
6.
FLASHCARD QUESTION
Front
What are the main properties of metals?
Back
Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.
7.
FLASHCARD QUESTION
Front
What are the main properties of nonmetals?
Back
Nonmetals are generally dull, poor conductors of heat and electricity, and can be gases, liquids, or brittle solids.
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