States of Matter
Which state of matter has particles with the strongest attraction between them?
Solids
Particles are constantly __________________
There is __________________ between particles
moving, space
How do you calculate the number of neutrons using the periodic table?
average atomic mass - protons
A change of matter that does not alter its chemical identity or composition
Physical change
When reading off a graduated cylinder do you read above or below the meniscus?
below
The change of state from gas to liquid and gas to solid is?
condensation, deposition
What is a model and what is a theory?
Model is consisting of words, pictures, physical objects or mathematical equations that are used to represent and explain complex objects
Theory is a scientific explanation of a phenomenon in the natural world based on many characteristics and investigations.
Why was Dalton's view of the atom called a theory and Democritus's view of the atom is called a philosophy?
Dalton conducted scientific experiments, while Democritus used reason and logic
Dry ice subliming at room temperature is used to mimic fog in some stage performances. What type of change is this? What is sublimation?
Physical change
Sublimation:change of state
___________ is the increase in volume of a substance when its temperature is raised.
__________ is the decrease in volume of a substance when its temperature is lowered
Thermal expansion, Thermal contraction
A pebble with a mass of 12grams is put into a graduated cylinder with 10 mL fo water, and the water rises to 15mL. Calculate the density of the pebble
density is ...
What is the order of the scientist in terms of when they introduced their atomic theory. Explain one theory from one of the scientists
democritius, artistotle, john dalton, jj thomson, rutherford, bohr
Define pure substances, elements and compounds
pure substances: has only 1 type of particle
elements: pure substance made up of only one type of atom
compounds: contains two or more elements
Explain the 3 states of matter and the common characteristics in terms of volume and shape. Which state can be compressed?
Liquid: takes the shape of its container and and has a constant volume
Gas: Takes the shape and volume of its container, can be compressed.
the measurements of a soap bar is 2cm by 2 cm by 5 cm. The density of this soap bar is 3.56g/cm3. What is its mass?
mass is ...
When Ernest Rutherford designed his _______ ______ experiment, what happened to the particles?
What did the particles hit?
gold foil, bounce back, some went through, they hit the dense nucleus
Baking powder is a pure substance used to help raise during the baking process. The powder mixes with water and when heated, it produces carbon dioxide gas. What kinds of changes are occurring during the making of bread?
Mixing with water is a physical change and producing carbon dioxide gas is a chemical change
Draw all the states of matter and explain how their particles move
*students have to draw pictures
Distinguish between quarks, gluons, and leptons and what type of particle are they?
quarks: protons, neutrons
leptons: electrons
elementary particles