Periodic Table

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•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are alkali metals?
Back
Alkali metals are the elements found in Group 1 of the periodic table, including Lithium (Li), Sodium (Na), and Potassium (K). They are known for being highly reactive and having one electron in their outermost shell.
2.
FLASHCARD QUESTION
Front
What is the relationship between matter and elements?
Back
Matter is made of elements. Elements are the basic building blocks of matter.
3.
FLASHCARD QUESTION
Front
What is the atomic number of iron?
Back
The atomic number of iron (Fe) is 26.
4.
FLASHCARD QUESTION
Front
What does the symbol 'C' represent in the periodic table?
Back
The symbol 'C' represents the chemical symbol for carbon.
5.
FLASHCARD QUESTION
Front
How are elements arranged on the periodic table?
Back
Elements on the periodic table are arranged by increasing atomic number, which corresponds to their mass, from lightest to heaviest.
6.
FLASHCARD QUESTION
Front
What are noble gases?
Back
Noble gases are the elements in Group 18 of the periodic table, known for their lack of reactivity due to having a full outer electron shell. Examples include Helium (He) and Neon (Ne).
7.
FLASHCARD QUESTION
Front
What is the atomic mass of an element?
Back
The atomic mass of an element is the weighted average mass of the atoms in a naturally occurring sample of the element, measured in atomic mass units (amu).
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