Brownian Motion and Diffusion
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Medium
+1
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Brownian motion?
The movement of water molecules in a beaker
The movement of air molecules
The movement of solid molecules
The movement of smoke particles in air
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pollen grains suspended in water exhibit Brownian motion. How does a particle undergoing Brownian motion move?
In smooth curves
Randomly
Orderly with a pattern
In straight lines with no change of direction
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student makes an observation using a microscope. He observed some particles which were moving in a zig-zag way. What particles could these NOT be?
Smoke particles in air
Dust particles in a room
Pollen grains in water
Molecules in a solid bar of steel
Tags
NGSS.MS-PS1-4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Light and fast moving particles can move heavier particles. Which one is a correct example of the light and the heavy particle?
Light : air molecule, Heavy : water molecule
Light : air molecule, Heavy : smoke particle
Light : smoke particle, Heavy : air molecule
Light : pollen grain , heavy : water molecule
Tags
NGSS.MS-PS2-2
NGSS.MS-PS3-1
NGSS.MS-PS3-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What evidence does Brownian motion provide about molecules of a gas or liquid?
Molecules are close together
Molecules are far apart
Molecules move continously but randomly
Molecules move continously and randomly
Tags
NGSS.MS-PS1-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diffusion occurs only in solids
True
False
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a solute?
A substance dissolved in another substance
the substance doing the dissolving
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