Classifying Matter
True or False: Matter has both Volume and Mass.
True
Wat phase has definite volume but no definite shape?
Liquid State
What is one of the hardest objects known and produced by man?
Dimond.
What is it called when matter changes phases from solid to liquid?
Melting
What are some common things that are associated with chemicals changes?
Gas production, color change, flammability ect.
Paint is an example of what classification of mixture?
Colloid
What does higher temperature cause the molecules/particles to do?
Speed up.
What is Property?
something that describes Matter.
In evaporation is energy being added or taken away?
Added
When butter is put into a microwave, and turns liquid, is it a chemical change or physical?
Physical.
What are the 2 sub-categories of a pure substance?
Elements and Compounds
True or False: gas particles glide around each other.
False: The are free moving, liquid state particles glide.
What a common example of something that has high viscosity?
Honey
In deposition is energy being taken away or added?
Taken away.
Is changing shape/color a chemical or a physical change?
Physical change.
What is the smallest component of an element or Compound?
Molecule
Why does the particles with the same energy (temperature) move slower in terms of mass?
They are more massive and heavier so they move slower, than the lighter particles.
What is the formula to find out the density of an object? What will happen if it's under 1?
Density=mass/volume
The object will float if the density is under 1, and sink if it's over 1.
In sublimation, what state does it start in, and go into, and is the energy being added or taken away?
It goes from solid to gas, and energy is being added.
Rotting food, is it a chemical change or Physical change?
Chemical.
Define miscible
2 liquids that go together (or mix) well.
What is the Energy's role?
It's role is to change matter from one phase to another.
What are the 5 official physical properties?
1. Conductivity
2.Viscosity
3.Malleabillity
4.Hardness
5.Density
What are the 2 laws of conservation? Name and definition of both.
Law of Conservation of Energy: energy cannot be destroyed or created.
Law of Conservation of Mass: Mass cannot be destroyed or created.
Is baking a cookie from liquid batter into a solid cookie a physical or a Chemical change?
Chemical.