matter deck 1 Flashcards
Characteristics of a Physical Property
- Substance can change it’s form: Solid, Liquid, Gas 2. substance never becomes something new 3. usually can undo the change
Characteristics of a Chemical Property
- More than one substance is combined 2. A reaction occurs and forms a new substance 3. Cannot undo change
Three physical states of most matter
Solid, Liquid, Gas
What is the name for each phase change?
Solid to Liquid: Melting
Liquid to Gas: evaporated
Gas to liquid: condensation
Liquid to solid: freezing
Gas substances at room temp
oxygen, carbon dioxide
Three characteristics of a solid
- have a definite shape 2. definite volume 3. High density
(Solids are formed when liquids are cooled)
How do large crystals form in solids?
when carbon atoms bond together and they cool slowly
What state is the most common for the basic elements?
solids
More Kinetic energy: solid or liquid?
Liquid because if their attraction is less, it will spread out
What shape does a liquid have?
It takes on the shape of the container
What is viscosity?
How strongly liquids/molecules are attracted to one another.
How is a liquid similar to a solid?
bother denser that gas, both have definite volume, and their molecules are closer together than gas.
How is a liquid different from a solid?
liquids can’t change shape
How would you change a solid to a liquid?
melting it
When is a substance called a gas?
When it has enough energy that the molecules can freely move away from each other.
What is the shape of a gas?
it doesn’t have a definite shape
In which state of matter are the molecules moving the fastest?
gas
What is atmospheric pressure?
a pressure that is applied or taken away from molecules and that pressure is in the air or atmosphere.
How is a gas similar to a liquid?
both fit in the same container, both move freely
How is a gas different from a liquid?
gas has more kinetic energy than liquid.
If the temp. remains constant, what happens to the volume of a gas when the pressure is increased?
the volume will increse
if pressure remains constant, what happens to the volume of a gas when the temp. is increased?
volume will decrease
what are 2 different ways to increase the volume of a gas?
increase temp. and decreasing pressure
why might you need to check the air in our bike tires before you go for a ride on a cold day?
because when temp. decreases, volume decreases. (there is less volume in the tires)
