Science: 5th grade: Changes of states of matter
what is the freezing point of water?
0* C and 32* F
Give an example of condensation:
A cold glass of ice water in a warm room. The water that forms on the outside of the glass is condensation.
Give an example of evaporation:
a pot of boiling water on the stove. The water will turn onto a gas and evaporate.
the change of a substance from a liquid to a gas ex. lakes, pools, oceans
boiling
the temperature at which a substance changes from a liquid to a gas
boiling point
the temperature at which a substance changes state from a liquid to a gas
boiling point
scientists describe compounds by combining letter and numbers into a chemical formula.
chemical formula
a change of matter that occurs when atoms link together in a new way creating a new substance different from the original substance
chemical reaction
a change of matter that occurs when atoms link together in a new way, creating a new substance different from the original substances
chemical reaction
a substance that is formed by the chemical combination of two or more elements
compound
the change of state from a gas to a liquid ex. dew, cold, drink on a hot day
condensation
the changing of a gas into a liquid
condensation
How matter changes: A gas can _________________to change it's state.
condense
Give an example of sublimation:
dry ice
the change of a liquid into a gas below the boiling point
evaporation
the conversion of a liquid to a vapor
evaporation
How matter changes: A liquid can _____________ or _______________ to change it's state.
freeze or evaporate
When the liquid gets colder, it ____________________.
freezes
the change of state from a liquid to a solid
freezing
the temperature at which a substance changed from a liquid to a solid
freezing point
the temperature at which a substance freezes
freezing point
-float past each other -don't stay in place -move so fast that they get farther -gases continue to expand -not close to each other at all -has no definite shape & no definite volume
gas
When a liquid gets hotter, it becomes a _________________.
gas
-slide past each other -don't stay in place -packed loosely -has definite volume & shade depends on the container
liquid
When a solid melts, it becomes a _____________________.
liquid
When a gases cool or condense, they become ___________________.
liquids
How matter changes: A solid can ________________ to change it's state.
melt
change of state from a solid to a liquid with the addition of energy
melting
the particular temperature at which a substance changes state from a solid to a liquid
melting point
the temperature at which a substance melts
melting point
matter in size, shape or state that does not change the type of matter
physical change
a solid formed by the chemical reaction of the same solutions
precipitate
a solid formed by the chemical reaction of the some solutions
precipitate
a new substance produced by a chemical reaction
product
an original substance at the beginning of a chemical reaction
reactant
-vibrating (barely move) -has definite shape & volume -stays in place -stable -packed tightly
solid
Change in temperature causes change of ________________.
state
the process in which a solid changes directly into a gas ex. dry ice
sublimation
the process of changing directly from a solid into a gas without first becoming a liquid
sublimation
