Understanding Matter
What is Matter?
Anything that has mass and takes up space.
What are the two main categories of matter?
Pure substances and and mixtures.
List the three common states of matter.
Solid, Liquid, and Gas
A change that results in the formation of a new substance
Name two main properties used to describe matter.
Physical properties and chemical properties.
What is a homogeneous mixture?
A mixture that has a uniform composition throughout.
What is the state of matter that has a definite shape and volume?
Solid
Provide an example of a chemical reaction.
Rusting or iron or burning of wood, ect.
What is the difference between mass and weight?
Mass is the amount of matter in an object.
Weight is the force of gravity acting on that mass.
What is the difference an element and a compound?
An element is a pure substance made of only one kind of atom.
A compound is made of two or more different atoms chemically bonded together.
In which state of matter do particles move freely and are far apart?
Gas
What is the main difference between a physical change and a chemical change?
Physical changes do not produce new substances, while chemical changes do.
Give an example of a physical change.
Melting ice or boiling water
What type of mixture can be separated by physicals means?
A heterogeneous mixture
What happened to the particles in a substance when it is heated?
They gain energy and move faster
What is viscosity?
A fluid's resistance to flowing.
What is the Law of Conservation of Mass?
Mass is neither created nor destroyed in a chemical reaction
Define a solution.
A homogeneous mixture where one substance is dissolved in another
Describe what happens during sublimation
A substance transitions directly from a solid to a gas without becoming a liquid.
Why can we describe liquids and gases as fluids?
The word fluid means "able to flow" Because liquids and gas particles are not held rigidly in place, they have freedom of movement and can flow.