Osmosis Pg.18

Question 1

Osmosis is the movement of ________ _________.

Answer 1

Water molecules.

Question 2

Osmosis is the movement of water molecules across a ________ _________ membrane from a _____ concentrated solution to a ______ more concentrated solution.

Answer 2

Partially permeable.
Less.
More.

Question 3

A partially permeable _______ is just one with very small holes in it.

Answer 3

Membrane.

Question 4

_____ _________ (like water) can pass through it, but _______ ________ (like sucrose) can’t.

Answer 4

Tiny molecules.
Bigger molecules.

Question 5

Water molecules actually pass ______ ______ through the membrane during osmosis.

Answer 5

Both ways.

Question 6

But overall, the water molecules move from the _____ _______ solution (where there are lots of water molecules) to the _____ _________ solution (where there are fewer water molecules).

Answer 6

Less concentrated.
More concentrated.

Question 7

This means the more concentrated solution gets ______ _______.

Answer 7

More dilute.

Question 8

The water acts like it’s trying to ______ ____ the concentration either side of the membrane.

Answer 8

Even up.

Question 9

Explain what will happen to the mass of a piece of potato added to a concentrated salt solution.

Answer 9

Water will move out the piece of potato by osmosis, so it’s mass will decrease.