Matter & the Particle Model
This model states that physical matter exists as particles that are constantly moving.
What is the particle model of matter?
This is the amount of matter in an object.
What is mass?
Two or more different elements chemically combined form this type of substance.
What is a compound?
The state of matter is determined by the relationship between the particles' kinetic energy and these forces between particles.
What are attractive forces?
Color, density, freezing point, ductility, and conductivity are all examples of this type of property.
What are physical properties?
Brownian motion and diffusion provide evidence for this model of matter.
What is the particle model of matter?
Unlike mass, this is a measure of the gravitational force acting on an object.
What is weight?
Two or more substances physically combined in variable proportions form this.
What is a mixture?
This state has a fixed shape, fixed volume, closely spaced particles, and low compressibility.
What is a solid?
Flammability is not a physical property; it is an example of this type of property.
What is a chemical property?
According to the particle model, all matter is in this condition, even when it appears to be still.
What is constant motion?
The SI unit for mass is the gram, while the SI unit for this is the newton.
What is weight?
Pure water, H₂O, belongs to this classification because hydrogen and oxygen are chemically combined in a definite ratio.
What is a compound?
This state has a fixed volume but takes the shape of its container and is considered a fluid.
What is a liquid?
Burning gasoline and rust forming on a metal fence are examples of this type of change.
What are chemical changes?
Aristotle believed matter was a continuous substance that could be divided indefinitely, while these ancient thinkers supported the idea that matter was made of particles.
Who were the atomists?
According to the law of conservation of matter, matter can change forms, but it cannot be created or destroyed.
What is the law of conservation of matter?
A mixture that has a uniform composition throughout, such as salt water or a cup of coffee, is called this.
What is a homogeneous mixture?
These two states of matter are fluids, meaning they can flow.
What are liquids and gases?
Freezing and condensation are changes of state that occur when particles do this.
What is lose energy?
These three subatomic particles are found in atoms.
What are electrons, protons, and neutrons?
A metal has a mass of 78.2 g and a volume of 11.4 mL. Using density = mass ÷ volume, its density is approximately this.
What is 6.86 g/mL?
Bowl of cereal and milk belongs to this classification because its different substances can be distinguished from one another.
What is a heterogeneous mixture?
The matter that makes up the stars is primarily in this state of matter.
What is plasma?
When a solid changes directly into a gas without first becoming a liquid, this process occurs.
What is sublimation?