Properties
What is a property?
Something that describes what something is or what it can do
Name a shape.
Various answers
What is volume?
How much space
What is density?
The mass per unit of volume
How tightly packed matter is in a space
What is compressibility?
can something be squished?
can a given amount of matter be made smaller?
Which states of matter can flow?
liquid and gas
What properties can we easily observe?
colour, shape, texture
Which state of matter has a definite (fixed) shape.
solid
Which states of matter have a fixed volume?
Solid and liquid
Which states of matter have a fixed volume?
solids and liquids
Which state of matter can be compressed?
gas
What is flow?
Changing shape to move around or through things
What properties do we need to measure?
length, mass, temperature, density
Which state of matter takes the shape of its container?
Liquid
Why is the volume of a gas not fixed?
The particles can move closer and farther away from each other
Why is the density of a gas not fixed?
The particles can move closer or farther away from each other
Why can't solids and liquids be easily compressed?
The particles are too close together.
Why can't a solid flow?
It can't easily change shape.
What do we call a property that does not easily change?
fixed
How does the shape of a gas change in its container?
Expands to fill
How are volume and density related?
If the volume is decreased for a given mass, the density will increase.
How are volume and density related?
When one goes up, the other goes down
They are inversely proportional
What happens to volume and density if an object is compressed?
Volume will decrease and density will increase.
When can a solid appear to flow?
When it is a bunch of tiny pieces like a powder or grains/granuals (sand)
Name two properties we need to test to observe but not measure.
magnetism and solubility
What do we need to do to change the shape of a solid?
Use force
How can we find the volume of an irregularly shaped solid?
Put it in a measured amount of liquid and measure how much the volume of the liquid is increased
How can we compare the densities of two substances?
measure the mass for the same volume
see if one floats in the other
Explain how compression (pressure) can change the state of matter.
A gas can be compressed into a liquid.
Why is flow important for our survival?
Various anwers