States of Matter
What are the three states of matter?
solid, liquid, gas
What happens to the particles in a solid if you heat them up?
They start to speed up and move away from each other
Matter is made up of:
tiny particles
Describe what a physical reaction is
a reaction that can be undone, it does not change the molecular structure, usually just changing color or form
Label rubbing alcohol, iron nail, and oxygen as either a solid, a liquid, or a gas
Rubbing alcohol (L)
Iron Nail (s)
Oxygen (G)
Which form of matter does not have a definite shape or volume
Gas
What is the process by which a liquid changes into a gas called?
evaporation
What are the elements that make up water?
H20- two parts hydrogen, one part oxygen
What is a chemical reaction
A reaction that creates a whole new structure by changing the molecular structure. Cannot usually be undone
What is the fourth state of matter we did not learn about?
plasma
Describe the volume and shape of liquid
What is the process when a gas is changed into a liquid called?
Condensation
What do you call two or more atoms that are bonded together
a molecule
Is mixing salt and water a chemical or physical reaction
If the mass of a container of liquid chocolate is 500g, and the same container of chocolate then is put in the freezer how much chocolate is in the container now?
500g
Describe the shape and volume of solids
solids have a definite shape and volume
In which state are the particles moving the fastest
gas
What is a single element not bonded with another element called?
atom
Is blowing up a balloon chemical or physical
physical
What word explains that molecules mix faster or slower based on their movement?
Diffusion
Describe the molecules in a solid (looking for three things)- what do they look like? How do they move? What keeps them together?
Tightly packed, vibrating, and has a strong bond
Name the 4 processess that make matter change states
evaporation, condensation, melting, and freezing
What are the three parts of an atom?
proton, nuetron, and electron
In a chemical reaction this structure is being changed
molecular
What says that matter cannot be created or destroyed?
The Law of Conservation of Mass