Nature of Science
When you repeat part of your experiment over and over; many trials
repetition
30 degree Celcius soup with a 20 degree Celcius spoon - heat will flow from
the soup to the spoon
Particles in the nucleus of an atom
neutrons and protons
Which property can identify an element: mass, density, or volume
density
the kind of change that is represented by a change in shape
physical change
When another scientist repeats your experiment
replication
putting a chair on the desk at the end of the day is ___________ energy transformed to __________ energy
kinetic to potential
particles not in the nucleus of an atom
electrons
The volume of an irregularly shaped object can be identified by
the water displacement method
The kind of change that is represented by a solid forming in a liquid
chemical change
The reason investigations are recreated over and over
To verify results
some energy is converted to __________ energy in every change. Considered wasted energy.
heat
elements with similar properties are in the same ...
column on the Periodic Table of Elements
A water level is at 20 mL. An object is placed in the water and the level rises to 27.8 mL. What is the volume?
7.8 mL
A change in density
physical change but can be a chemical change
A statement that describes what will happen in aspecific set of circumstances every time
scientific law
Waves that travel fastest in a solid and slowest in a gas
mechanical waves such as a sound wave
A solution is a ___________ mixture
homogeneous
name 2 "unexpected" signs of a chemical change (not odor)
color
temperature
when a change produces a solid is formed in a liquid, what is the solid called and what kind of change occured
precipitate / chemical
What has more evidence: scientific law, scientific theory, hypothesis
scientific law and theory - they both are supported by lots of evidence. They answer different questions
What does the Law of Conservation of Energy state
Energy can not be created nor destroyed but can be transformed
The largest part of a solution is the ____________ while the smallest part of a solution is the __________
solvent / solute
Describe the movement of particles in a solid, liquid, and gas
solid - vibrate in place
liquid move past each other but stay in contact
gas - freely move about
What does the Law of Conservation of Mass state
Matter can not be created not destroyed only transformed