STAAR SCIENCE 8TH REVIEW

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Science
•
8th Grade
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Newton's Third Law of Motion?
Back
For every action, there is an equal and opposite reaction.
Tags
NGSS.MS-PS2-1
2.
FLASHCARD QUESTION
Front
What are valence electrons?
Back
Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.
3.
FLASHCARD QUESTION
Front
What is the atomic number?
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
4.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a process where one or more substances are transformed into different substances with different properties.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Melting ice is an example of a physical change, as it changes from solid to liquid without altering its chemical composition.
Tags
NGSS.MS-PS1-4
6.
FLASHCARD QUESTION
Front
What is the difference between metals and nonmetals?
Back
Metals are typically malleable, ductile, and good conductors of heat and electricity, while nonmetals are not.
7.
FLASHCARD QUESTION
Front
What is the significance of the mass number?
Back
The mass number is the total number of protons and neutrons in an atom's nucleus.
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