Law of Conservation of
Mass
Mass
Mass should stay the same.. True or False?
True
Is crushing chalk a physical or chemical change? Why?
A physical change because no new substance was created.
What charge does a proton have?
Positive
What are 4 states of matter?
Liquid, Solid, Plasma, Gas
What is a claim?
A statement that you believe to be true.
What undergoes the chemical reaction?
Reactants
Are compounds pure substances or mixtures?
Pure substances!
Where are protons located on an atom?
Nucleus
How do solid particles move?
They vibrate
What is evidence?
Scientific data that proves your claim.
In our open bottle alka seltzer experiment, why does the mass drop?
Because the gas from the tablet was released.
Homogeneous!
What is the smallest particle of matter to exist alone or in a combination?
Atom
What is the most compact state of matter?
Solid
What is reasoning?
Connects your evidence to your claim.
Billy did a lab where he weighed paper before he ripped it, and after he ripped it. Before he rips it it weighs, 2.3 grams. Once he rips it, it weighs 1.3 grams. Did he make a mistake? What could of happened?
Yes.
Air, vinegar, and alcohol are compounds...True or False?
False!
50 Extra bonus points...What are they?
An atom of silicon and an atom of potassium will have the same number of protons, neutrons, and electrons...True or False?
False!
What is most free moving state of matter?
Gas/Plasma
What axis are the independent and dependent variables located on?
independent-x axis
dependent-y axis
What is the Law of Conservation of Mass?
This is the scientific rule that states mass can not be created nor destroyed, just the molecules are rearranged.
Do mixtures or pure substances have properties of color, smell, and taste?
Trick question! They both do.
The reactivity of an atom is dependent on the number of neutrons in the outermost shell...True or False?
False!
What state of matter has indefinite shape and volume?
Where do the IV and DV go on a graph?
IV- x
DV- y