Physical Properties
Anything about an object that can be observed with our ______________ is a physical property.
a. pencils c. senses
b. minds d. thoughts
c. senses
Name the three states of matter.
Solid
Liquid
Gas
Heating some solids can cause them to melt and become ______________.
liquids
When we made trail mix out of peanuts, raisins, and chocolate chips, did we make a physical change, a chemical change, or a mixture?
mixture
Define sound.
Sound is a form of energy that you can hear.
Define mass
The amount of matter in an object
True or False
The only state of matter that takes the volume of its container is gas.
True.
Both solids and liquids keep their volume.
(This is different than shape - gas AND liquids take the shape of their container)
Heating a liquid can cause it to become a _________.
gas
When iron gets rusty, is it a physical change or a chemical change?
When iron (an iron nail, for example) gets wet the oxygen that is in the water combined with the iron to form a new kind of matter called rust. This is a chemical change.
Define vibration.
A vibration is a rapid back-and-forth movement.
Define volume
The amount of space that an object takes up
Describe the shape and volume of a solid.
Solids keep their shape.
Solids keep their volume.
Cooling a liquid can cause it to become a ___________.
solid
Define mixture.
A mixture is two or more kinds of matter combined.
Name 3 ways you can cause an object to vibrate.
You can cause an object to vibrate by
blowing, hitting, shaking, rubbing, or plucking.
What is the difference between mass and volume?
Mass is the amount of matter in an object. Volume is the amount of space an object takes up.
Describe the shape and volume of a liquid.
Liquid takes the shape of its container.
Liquid keeps its volume.
A liquid changing to a gas is called ____________ .
evaporation
Define physical change.
A physical change happens when matter changes but does not form something new.
Define reflect and tell what kinds of surfaces reflect the best.
Reflect means to bounce a sound waves off of an object.
Large, hard, smooth surfaces reflect sound waves.
Name three physical properties of matter.
color temperature
size mass
shape volume
hardness texture
Describe the shape and volume of a gas.
Gas takes the shape of its container.
Gas takes the volume of its container.
Condensation
Define chemical change.
A chemical change happens when matter changes into a new kind of matter.
Define absorb and tell what kinds of surfaces absorb the best.
Absorb means to take in a sound wave.
Rough, soft, or uneven surfaces absorb sound waves.