Changes in States
Liquid to a solid
Freezing
What is the name of the type of energy involved in stirring or shaking?
mechanical energy
What does a triple beam balance measure?
mass
What state of matter has molecules that are closest together?
solid
Rust is an example of __________ change
chemical
When a liquid freezes, what happens to the molecules?
They become closer together
Which two do not easily dissolve: salt, sugar, corn syrup, oil, butter, kool aid mix
oil and butter
How could I measure the volume of an irregular shaped solid? Be specific
Add water to a graduated cylinder, then add the solid, then subtract the amount that the water rose from the original amount.
What state of matter takes the shape of the bottom of its container?
liquid
List three causes of chemical change
heat, bacteria, time, chemicals
Gio is seeing how fast water will evaporate out in the hot Florida sun in July using a beaker. How will he know that evaporation has occurred?
There is less water in the beaker each time he checked it.
How would I easily separate salt from sand. Be specific
Place the mixture in a filter and run hot water through it.
What will happen if an object that is less dense is dropped into a liquid that is more dense?
It will float.
What state of matter does not change its shape on its own?
solid
List four signs of chemical change
change in color, taste, texture, smell, chemical composition
What state of matter is in between a liquid and a gas?
vapor
Nohelia is running a iced lemonade stand with her friend Seabass. Seabass puts ice in a pitcher, then lemons, water and sugar. He then stirs it. Nohelia wants her sugar dissolved faster. How could she change this process?
Add all the ingredients except the ice, then stir.
How can I measure the volume of a rectangular prism too big to put in a graduated cylinder?
Length x width x height
atoms
Define physical change
A change in matter in which the chemical composition does not change.
Evaporating is going from a _______ to a _________
liquid to gas
__________ the temperature will accelerate the rate of dissolving.
increasing
A graduated cylinder measures the __________ of matter
volume
What state of matter has no real shape?
gas
Which one does not belong: breaking a window, tearing a piece of paper, eating a slice of bread, sharpening a pencil, adding salt to water
eating a slice of bread