1. States Of Matter

Question 1

What is the particulate theory of matter

Answer 1

All matter is made up of particles.

These particles are in constant motion,temperature affects the movement of particles

There are spaces between the particles.

Particles have forces of attraction between them

Question 2

What evidence supports these particles

Answer 2

Diffusion
Expansion On Heating
Brownian Motion

Question 3

What is Osmosis

Answer 3

Osmosis is the movement of water molecules from a region of higher water concentration to a region of lower water concentration through a selectively permeable membrane.

Question 4

What are the uses of Osmosis

Answer 4

In Food Preservation:
Salting or sugaring foods draws water out of microbes by osmosis, preventing spoilage.

In Labs:
Used in experiments with dialysis tubing to model osmosis.

In Plants:
Helps absorb water from the soil into root hairs.

In Animals:
Helps regulate water balance in red blood cells and other cells.

Question 5

Solid → Liquid
Liquid → Solid
Liquid → Gas
Gas → Liquid
Solid → Gas
Gas → Solid

Answer 5

Melting
Freezing
Evaporation/Boiling
Condensation
Sublimation
Deposition