
8th Grade Science 1st semester
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Law of Conservation of Mass?
Back
The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
FLASHCARD QUESTION
Front
How do you calculate mass using force and acceleration?
Back
Mass can be calculated using the formula: Mass = Force / Acceleration. For example, if a force of 40 newtons causes an acceleration of 8 m/s², the mass is 5 kg.
3.
FLASHCARD QUESTION
Front
What is cohesion in terms of water molecules?
Back
Cohesion is the property of water molecules that allows them to stick to each other due to hydrogen bonding, which is why water forms droplets.
4.
FLASHCARD QUESTION
Front
How is an element represented in chemical notation?
Back
An element is represented by a one or two-letter symbol, where the first letter is always capitalized and the second letter, if present, is lowercase.
5.
FLASHCARD QUESTION
Front
What does it mean for a chemical equation to be balanced?
Back
A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved.
Tags
NGSS.MS-PS1-5
6.
FLASHCARD QUESTION
Front
What is the formula for calculating acceleration?
Back
Acceleration can be calculated using the formula: Acceleration = Force / Mass.
Tags
NGSS.MS-PS2-2
7.
FLASHCARD QUESTION
Front
What is the difference between adhesion and cohesion?
Back
Adhesion is the attraction between different substances, while cohesion is the attraction between similar substances, such as water molecules.
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