S1.1 The Particulate State Of Matter Flashcards
(16 cards)
What is a particle?
The smallest unit of matter of a substance
What is an atom?
The smallest particle of an element
What is a molecule?
Two or more atoms chemically bonded (ionic or covalent)
What is a Element?
A group of particles where all the atoms are the same
What is a compound?
A substance with multiple elements chemically bonded
That has a definite composition (you can write a formula)
And is separated by physical means
What is a mixture?
A substance with two or more different elements not bonded
That has a indefinite composition and is separated by physical means
What is a Homogeneous mixture?
A substance where each component is evenly distributed
What is a heterogeneous mixture?
A substance where each component exists in groups or clumps
Which three state changes are endothermic?
Melting, boiling/evaporation and sublimation
Which three state changes are exothermic?
Freezing, condensation and deposition
Name the six state changes and what they are from and to
Solid - liquid: melting
Liquid to solid: freezing
Liquid to gas: boiling
Gas to liquid: condensation
Gas to solid: deposition
Solid to gas: sublimation
Solid
Particles close together vibration in place fixed volume fixed shape
What are the four state symbols?
Solid: s
Liquid: l
Gas: g
Aqueous: aq
Liquid
Particles close together moving over each other fixed volume takes the shape of the container
Gas
Random quick movement filled container no fixed volume or shape
Absolute zero
0k or -273C
