Flashcards in Models Of Matter And Heat Transfer Deck (51):
What are substances made of?
What Substances have particles packed together?
Wha substances have the most energy?
Wha happens when a gas turns into a liquid?
What happens when a liquid changes to solid?
What happens when a solid turns into a liquid?
What happens when a liquid turns into a gas?
Solids: can you pour?
Solids: can you stir?
Solids: can you squash?
Liquids: can you pour?
Liquids: can you stir?
Liquids: can you squash?
Gases: can you pour?
Gases: can you stir?
Gases: can you squash?
What is diffusion?
The movement of small particles through air or water so that they are spread evenly
What do particles do in perfume when you spray it?
Move from an area of high concentration to low concentration
What are 3 states of matter?
Solids, liquids, and gases
What happens to particles when a solid melts?
They space out evenly and slide over eachother
What happens to pylons in the summer?
They heat up and arch down
What happens when water is heated?
It rises up
What is a solution?
The mixture after dissolving
What does dissolve mean?
When a substance is broken up by a liquid
What is a soluble?
A substance that can dissolve
What is an insoluble?
A substance that can’t be dissolved
What is a solvent?
The liquid being used to dissolve
What is a solute?
The solid substance being dissolved
What is a saturated solution?
When no more solute is able to dissolve it is a saturated solution
How much sugar will dissolve in to 20ml water?
What is density?
The number of particles in a given volume
How much of the air is nitrogen?
How much of the air is oxygen?
What happens when a flame goes into hydrogen?
It pops and puts out the flame
What happens when a glowing stick goes into oxygen?
What happens when you put limewater into carbon dioxide?
It goes cloudy
What is melting point?
The temperature at which a solid turns into a liquid or vice-versa
What is boiling point?
The temperature at which a liquid turns into gas or vice-versa
How long does it take for ice to melt in water?
What is heat?
A type of energy
What is temperature?
A scale for measuring heat energy
What happens when particles get hot?
They have more energy
Put in order from hottest to coldest if you put it in boiling water:
What is conduction?
When heat energy is applied to particles and they move and vibrate
What are conductors?
Materials that pass on heat energy from atom to atom quickly
What are insulators?
Materials which pass on heat energy from atom to atom slowly or not at all
Name some conductors
Copper, steel, aluminium
What is convection?
Hot liquid or gas that rises
What is a convection current?
When liquid/gases heat up and rise up then when it cools it sinks down again
What is radiation?
The movement of heat energy in a wave called infrared, it doesn’t need particles