A variable that is controlled by the experimenter.
What is an independent variable?
100
Mass/Volume = ?
What is the formula for density?
100
In a very dense object, the molecules look like this....
What are packed very close together?
100
The definition of mass is ...
What is how much matter (stuff) is in an object.
100
An object that has a density of 0.95 g/mL will sink or float?
What is float?
200
This is something something you are measuring in an experiment that is located on the y axis of a graph.
What is the dependent variable?
200
1.0 g/mL or 1.0 g/cm^3
What is the density of water?
200
What happens to the density of air in a hot air balloon when the burner is turned on?
The air density decreases and the balloon rises.
200
The definition of volume is...
What is how much space an object takes up.
200
In a density column, corn syrup has a density of 1.38g/mL, vegetable oil has a density of 0.92 g/mL, and water has a density of 1.0 g/mL. What will their order be FROM BOTTOM TO TOP?
What is syrup, water, oil.
300
The "If ______________, then _____________." is the proper form of this in an experiment.
What is the hypothesis?
300
The measurements used to measure density are...
What are g/mL or g/cm^3
300
As temperature decreases, density ____________.
What is increases.
300
The force of gravity upon an object is...
What is weight?
300
Describes the arrangement of helium molecules inside a balloon compared to the air molecules outside the balloon.
Helium molecules are farther apart from each other?
400
You use this piece of equipment to measure the volume of an object?
What is a graduated cylinder?
400
The density of an object that has a mass of 10g and a volume of 5 cm^3.
What is 2 g/cm^3?
400
A piece of wood floats on water, and when you cut holes in it will continue to float. Why?
What is because the wood still has the same density because the same amount of mass and volume were removed.
400
When gravity changes on different planets, what happens to the weight and mass of an object?
The weight will change but the mass will not
400
A characteristic property of metals is....
Conduct electricity, shiny, malleable, ductile
500
The method for measuring the volume of an object in liquid.
What is the water displacement method?
500
An object that weighs 25g and has a volume of 50mL will sink or float in water?
What is float?
500
True or false - two different sized logs from the same tree will not float the same. Explain why.
What is false because they have the same density - their masses and volumes are proportional.
500
Why does a large ship made of metal float?
The ship must displace an amount of fluid that is equal to it's weight.
500
How does the motion of molecules change when a substance freezes or melts?
Molecules slow down when freezing and speed up when melting