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Science-The particle model(English-Meaning)


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Gas
Something that does not have a fixed shape or volume, and is easy to squash.
Liquid
Something with a fixed volume but no fixed shape.
Property
A description of how a material behaves and what it is like. Hardness is a property of some solids.
Solid
Something with a fixed shape and volume.
Adjective
A word that describes, or gives information about a noun.
Comparative
A type of adjective that compares two things or people.
Superlative
A type of adjective that compares one thing or person within a group of things or people.
Acid rain
Rainwater that is more acidic than usual due to air pollution.
Corrosive
Substances that attack metals, stonework and skin are called corrosive.
Compressed
To be squeezed into a smaller volume.
Cubic centimetre
A unit used for measuring volume.
Flammable
Easily set on fire.
Flow
Move and change shape smoothly.
Fossil fuel
Fuel formed from once living material over millions of years, e.g. coal, oil or natural gas.
Hazard
Something that could cause harm.
States of matter
There are three different forms that a substance can be in: solid, liquid or gas. These are the three states of matter.
Toxic
Poisonous.
Volume
The amount of room something takes up. Often measured in cubic centimetres (cm3).
Data
Observations collected in experiments.
Evidence
Information that is used to support a hypothesis or theory.
Hypothesis
An idea which explains how or why something happens.
Prediction
What you think will happen in an experiment.
Scientific method
A way scientists use observations, hypotheses, predictions and experiments to produce theories to explain the things they see around them.
Theory
A hypothesis or set of hypothesis that explains how and why something happens. The predictions made using a theory should have been tested on several occasions and always found to work.
Observation
Something that you see happening.
Particle theory
Theory used to explain the different properties and observations of solids, liquids and gases.
Particles
The tiny pieces that everything is made out of.
Random
Having no regular pattern.
Brownian motion
Erratic movement of small specks of matter caused by being hit by the moving particles that make up liquids or gases.
Nanometres
unit of length: 1 nanometre = 0.000 000 001 metre
Nanoscale
Scale for measuring very small particles:1 nanometre (nm) = 0.000 000 001 metre (m)
Diffusion
When particles spread and mix with each other without anything moving them.
Air pressure
The force on a certain area caused by air molecules hitting it.
Vacuum
A completely empty space, containing no particles.
Composting
Leaving dead plant material to rot.
Incineration
The act of burning something. Used as a method of dealing with waste.