Test 2 yr 8 Flashcards
Solid
State of matter that has a fixed shape and volume.
Liquid
State of matter that a fixed volume, but no fixed shape.
Gas
State of matter with no fixed volume or shape.
Properties
Characteristics or features of an objet or substance.
Diffusion
The spreading of one substance through another due to the movement of their particles.
Mass
The quantity of matter in an object (usually measured in grams or kilograms).
Volume
The amount of space taken up by an object or substance.
Fluid
A substance that flows and has no fixed shape. Gases and liquids are fluids.
Precipitation
Falling water in solid or liquid form. The type of precipitation depends mostly on the temperature in the clouds and the air around them.
Particle model
A description of the moving particles that make up all matter and how they behave. The model explains the properties of solid, liquid and gas.
Expands
Increase in size due to the movement of particles in a substance.
Contracts
Shorten or become smaller in size.
Alchemists
Olden-day ‘chemist’ who mixed chemicals and tried to change ordinary metals into gold. Alchemists also tried to tell the future.
Investigation
Activity aimed at finding information.
Observations
Information obtained by the use of our senses or measuring instruments.
