States of matter
These are the three states of matter we are focusing on in this unit.
Solid, liquid and gas
Freezing starts and ends with these two states of matter.
Liquid and solid.
Boron (B) is an example of...
An element
On the heating curve diagram shown, what do parts A, C, and E tell us? (Hint: Think states of matter)
A = Solid
C = Liquid
E = Gas
Physical or chemical change: ripping paper
Physical change
Rank the states of matter in terms of particle speed (how fast they move) - from slowest to fastest.
Solid, liquid, gas.
A puddle of water drying up on a hot day is an example of...
Evaporation
Octane (C8H18) is an example of...
A compound.
On the heating curve diagram shown, what phase changes do we see in parts B and D?
B = Melting
D = Evaporation
Physical or chemical property: The things that you observe with your senses (see, touch, smell, etc.)
Physical property.
Rank the states of matter in terms of particle energy from lowest to highest energy.
A solid changing to a liquid is this phase change...
Melting
Tea is an example of this type of mixture...
A homogeneous mixture.
Choose: Energy increases or decreases as you move up the heating curve diagram.
Increases
Chemical or physical change: Burning paper
Chemical change
Rank the states of matter in terms of particle attraction (closeness of particles) - lowest attraction to highest attraction.
These three phase changes absorb (take in) energy
Melting, evaporation, and sublimation.
How can you tell that something is a compound?
There are two or more elements that are bonded together. For example, glucose is a compound - you can tell by its formula (C12H22O11).
Describe the motion of particles as you move up the heating curve.
The particles move faster as you move up the heating curve. The temperature is increasing, which makes the particles move faster.
Luster (how shiny something is) is an example of which type of property?
Physical property
These states of matter have "indefinite shape".
Liquid and gas
These two phase changes skip going through the "liquid" state.
Sublimation and deposition.
Glucose (C6H12O6) is not an example of an element because...
There are 2+ elements bonded together (Carbon = C, Hydrogen = H, and Oxygen = O).
What happens to temperature when a substance goes through a phase change?
The temperature stays constant.
Flammability is an example of which type of property?
Chemical property.