What causes melting?
Heat.
Describe the particle model of a gas.
Particles are spaced far apart. This means gas can have any shape. It can also be squashed easily.
When something goes from SOLID to GAS, do the molecules get closer together or farther apart?
Farther Apart
What are the three states of matter?
solid, liquid, gas.
THEY HAVE THEIR OWN SHAPE, MASS AND VOLUME
Solid
THEY TAKE THE SHAPE OF THEIR CONTAINER
LIQUIDS
THEY HAVE MASS AND THEY CAN FLOW AND CAN BE COMPRESSED.
Gases
What is freezing?
When a liquid cools and it changes into a solid.
Give 2 daily activities that use evaporation.
evaporation. Drying clothes, sweeping wet floor, drying puddle, cooling down the hot drinks, ironing clothes, drying wet hair, making salt, etc.
THEY HAVE NO VOLUME OR FIXED SHAPE
Gas
Describe the particle model of a solid.
Particles are tightly packed in fixed positions. This makes it difficult for a solid to change shape.
Describe the particle model of a liquid.
Particles are close together but can slide past each other and change places. This means liquids can change shape easily.
Is this a solid, liquid, or gas?
Solid
At what temperature does the evaporation happen?
High Temperature
Evaporation is a change from _____ state to _____ state.
Liquid to gas