8th grade Science midterm
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
+5
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.
2.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A molecule is formed when two or more atoms are chemically bonded together.
Tags
NGSS.MS-PS1-1
3.
FLASHCARD QUESTION
Front
How do you calculate density?
Back
Density is calculated using the formula: Density = Mass/Volume.
4.
FLASHCARD QUESTION
Front
What state of matter has the fastest moving particles?
Back
Gas has the fastest moving particles compared to solids and liquids.
5.
FLASHCARD QUESTION
Front
Which group on the periodic table has a full set of valence electrons?
Back
Noble gases have a full set of valence electrons.
6.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are present.
7.
FLASHCARD QUESTION
Front
What is the difference between a compound and a mixture?
Back
A compound is a substance formed when two or more elements are chemically bonded, while a mixture is a combination of two or more substances that are not chemically bonded.
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