
Physical Sciences Test 1 Complete

Flashcard
•
Quizizz Content
•
Physics
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD
Front
What are intermolecular forces?
Back
Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They play a crucial role in determining the physical properties of substances, such as boiling and melting points.
2.
FLASHCARD
Front
How do intermolecular forces affect boiling points?
Back
Substances with stronger intermolecular forces generally have higher boiling points because more energy is required to overcome these forces during the phase change from liquid to gas.
3.
FLASHCARD
Front
What is the significance of comparing H₂O and CH₄ in terms of intermolecular forces?
Back
H₂O has strong hydrogen bonds (a type of intermolecular force), while CH₄ has weak London dispersion forces. This significant difference in intermolecular forces leads to a much higher boiling point for H₂O compared to CH₄.
4.
FLASHCARD
Front
What is Newton's law of universal gravitation?
Back
Newton's law of universal gravitation states that every point mass attracts every other point mass in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
5.
FLASHCARD
Front
What is the formula for gravitational force according to Newton's law?
Back
6.
FLASHCARD
Front
What happens to gravitational force if the distance between two masses increases?
Back
If the distance between two masses increases, the gravitational force decreases, as it is inversely proportional to the square of the distance.
7.
FLASHCARD
Front
What is the effect of increasing the mass of a star on the gravitational force it exerts on a planet?
Back
If the mass of a star increases, the gravitational force it exerts on a planet also increases, as gravitational force is directly proportional to the mass of the objects.
8.
FLASHCARD
Front
What is the relationship between mass and gravitational force?
Back
Gravitational force increases with an increase in mass and decreases with an increase in distance between the masses.
9.
FLASHCARD
Front
What are the types of intermolecular forces?
Back
The main types of intermolecular forces are hydrogen bonds, dipole-dipole interactions, and London dispersion forces.
10.
FLASHCARD
Front
What is a hydrogen bond?
Back
A hydrogen bond is a strong type of dipole-dipole interaction that occurs when a hydrogen atom covalently bonded to a highly electronegative atom (like O, N, or F) is attracted to another electronegative atom.
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