Unit 3 Test
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Easy
Standards-aligned
Brianna Burnett
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of diffusion?
The movement of particles from an area of high concentration to an area of low concentration.
The process of a liquid turning into a gas.
The movement of water across a semipermeable membrane.
The process of a solid turning into a liquid.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diffusion occurs ______ the concentration gradient (membrane), from high to low.
up
down
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an everyday example of diffusion?
Air freshener spreading through a room
Water boiling
Ice melting
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At equilibrium, the concentration of the substance is equal throughout the space. True or False?
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to perfume molecules when they are sprayed in a room?
They evaporate and spread throughout the room.
They remain in the bottle.
They change color.
They become solid.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define osmosis.
Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
Osmosis is the process of active transport of ions across a membrane.
Osmosis is the diffusion of gases from a region of high pressure to low pressure.
Osmosis is the movement of solute particles from a region of high concentration to low concentration.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A semipermeable membrane allows some substances to pass through (usually water) but not others.
True
False
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