What is Matter
mass
List three common phases of matter.
solid, liquid, gas
When a solid changes to a liquid, the change is called this.
melting
When two or more substances are combined, they are a type of this.
mixture
the location/temperature
All matter is made of particles called __________.
atoms
Matter that has a definite shape and a definite volume is in this phase.
solid
When a liquid changes to a solid, the change is called this.
freezing
A special type of mixture in which one part is dissolved into another is called this.
solution
In a science experiment, Indigo wants to know if a liquid has a definite volume. She pours water into different containers to see if the volume will change. What is the dependent variable in her experiment?
the volume of the liquid
mass
Matter that has a definite volume but no definite shape is in this phase.
liquid
When a liquid changes to a gas, the change is called this.
evaporation
True or false?
In a solution, the parts are visible and easy to separate.
false
Heather wants to know if salt or sugar will dissolve faster in water. She puts a teaspoon of salt into one cup of water and a teaspoon of sugar into another cup of water and measures the amount of time it takes for each to dissolve. What is the independent variable in her experiment?
the salt and sugar
The amount of space an object or substance takes up is its ________________.
volume
Matter that has no definite shape and no definite volume is in this phase.
gas
When a gas changes to a liquid, the change is called this.
condensation
True or false?
Salt water is a solution because the salt is dissolved in the water.
true
Michael wants to know if salt will dissolve faster in cold water or hot water. He puts the same amount of salt into a cup of cold water and a cup of hot water and measures how long it takes for each to dissolve. What is the dependent variable in his experiment?
the amount of time it takes to dissolve