Science ~ Particles Flashcards
How many materials are made of particles?
every material in the world
What determines whether they are solid, liquid or gas?
The arrangement of the particles
Every material has different properties. What does this determine?
The behaviour of the material.
What are some of the different properties?
Shiny
Hard
Conducts energy
What type of substance only has one type of particle?
A pure substance
What type of substance has more than one type of particle?
A mixture
What material is stronger than pure metals because of its different sized atoms?
Alloys
What two factors does density rely on?
Mass and volume
What is mass measured in?
Grams or Kilograms
What is volume measured in?
Cm3
How do you calculate the volume of an object?
Height X Width X Depth
How do you calculate density?
Mass
————
Volume
Which substances flow?
Gas and liquid
Which substances can be compressed?
Gas
Which substances are in a fixed shape?
Solid
Which state of matter has the most energy?
Gas
Which state of matter has the least energy?
Solid
Which two states of matter have a high density?
Liquid and Solid
What is the transition between solid to liquid called? 
Melting
What is the transition from liquid to solid called? 
Freezing
What is the transition from liquid to gas called?
Evaporation 
What is the transition from gas to liquid called?
Condensation
What is the transition from solid to gas called?
Sublimation
What is the transition from gas to solid called?
Deposition
If the temperature is above the boiling point, what state of matter is it? 
Gas
If the temperature is between the melting and boiling points, what state of matter is it? 
Liquid
If the temperature is below the melting point, what state of matter is it? 
Solid
What is diffusion? 
Diffusion is the movement of particles from an area of high concentration to an area of low concentration down a concentration gradient, it requires no energy 
What are four of the factors that affect diffusion? 
- This state of matter as only gases and liquids can diffuse
- the temperature: if the particle has more heat has more energy that thought it will move quicker.
- The size of the particle the bigger The particle the slower it diffuses
- concentration gradient is the bigger, the difference between high and low areas. The faster diffusion is 
What can you do to increase the gas pressure in something?
- Heat up the particles so they move faster
- Add more air
What can you do to decrease the gas pressure in something?
- Cool the particles down so they move slower
- Let some air out
