Particle Theory and States of Matter
What is matter?
Anything that has mass or volume.
What is the formula for density?
Density = Mass / Volume.
What is the process of a liquid turning into a gas called?
Evaporation or boiling.
What is an element?
A substance that cannot be broken down into another substance.
What is the periodic table?
A chart that arranges elements by their atomic structure and properties.
Describe the behaviour of particles in a solid.
Particles are closely packed and vibrate in place.
How does density affect sinking and floating?
Objects with higher density than the fluid sink; those with lower density float.
What is sublimation?
The process where a solid turns directly into a gas.
What is the formula for carbon dioxide?
CO2
What is the symbol for carbon?
C
What happens to particle movement when heat is added?
Particle movement increases.
Why do ships float on water?
Because their overall density is less than that of water.
What happens to the particles in a gas during deposition?
Particles lose energy and form a solid.
What is a mixture?
A combination of two or more pure substances.
Name a common use for aluminium
Used in making cans and aircraft.
What is the term for a solid turning into a liquid?
Melting
What happens to the density of a substance when it is heated?
Density decreases as volume increases.
What happens to particles during freezing?
Particles lose energy and move closer together.
How can compounds be separated into their elements?
By passing electricity through the compound or burning it.
What is the main property of metals?
They are good conductors of heat and electricity.
How does the particle model explain the properties of gases?
Particles are far apart and move freely.
What is the unit of density?
g/cm3 or g/mL
What is the term for the temperature at which a liquid turns into a gas?
Boiling point
Describe the particle arrangement in a mixture.
Particles are not chemically bonded and can be physically separated.
What is the symbol for lead?
Pb