The Particle Theory
What is a particle?
A tiny piece of matter we cannot see.
When a liquid changes to a solid, it is called?
Freezing
Pizza
(Mechanical) Mixture
What is a mixture called where you can see the different parts?
A mechanical or heterogenous mixture.
What is the process by which plants make their own food using sunlight called?
Photosynthesis
Particles move faster when this happens to them.
When they are heated.
This state of matter has a fixed shape.
Solid.
Salt
Pure Substance
Apple juice
homogenous or solution
What force keeps the planets in orbit around the sun?
Gravity
Particles are doing this all the time.
Moving
Which two states of matter can flow?
Liquid and Gas.
Air
Mixture (Solution)
Chocolate Chip Cookie
Mechanical mixture
What is the name of the galaxy that contains our solar system?
The Milky Way
True or False, particles in solid are moving at the same pace as a liquid
False - All particles in a solid are slower than a liquid
In which state of matter are the particles farthest apart?
Gas.
Aluminum Foil
Pure Substance
Give an example of a homogeneous mixture that you cannot physically see, but is all around us
Air
What is the term for the shaking of the Earth’s surface caused by a sudden release of energy?
An earthquake
The Particle Theory states this about particles in a pure substance.
Particles are identical (all the same) in a pure substance.
What state of matter has a definite volume but no definite shape?
Liquid
Tap Water
Mixture (Solution)
Homogenous mixtures are most commonly what state of matter?
liquid
What is the chemical symbol for Hydrogen?
H