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Density by GK
Physical Science Density
Question | Answer |
---|---|
What is the definition of density? | amount of mass in a given volume of a substance |
What is mass? | amount of matter |
What is volume? | amount of space taken up |
As mass increases, what happens to the density? | density also increases |
What happens to density as volume increases? | density decreases |
Density and mass have what kind of relationship? | direct relationship |
Density and volume have what kind of relationship? | inverse relationship |
A fluid is anything that can do what? | flow |
Which two states of matter are fluids? | liquids and gases |
Liquids are fluids because they can do what? | flow |
What is the density of water? | 1.0 g/cm cubed |
What density is needed for something to float in water? | less than 1.0 g/cm cubed |
What density is needed for something to sink in water? | greater than 1.0 g/cm cubed |
What is the formula for density? | mass divided by volume |
The formula for the volume of any type of solid rectangular object is what? | L x W x H |
The densities of which things are always the same? | pure substances |
Which substances are pure substances? | elements and compounds |
Why can the density of a pure substance be used to identify the substance? | Its density does not change |
What is the upward force of a fluid on an object immersed in the fluid called? | the buoyant force |
Archimedes' principle states that the buoyant force exerted on an immersed object is equal to what? | the weight of the immersed object |
Using a graduated cylinder and water to measure volume is called what? | water displacement |
What is the volume of an object that makes the water level in a graduated cylinder rise from 5 mL to 12 mL? | 7 mL |
What is the volume of an object that is 2 cm long, 3 cm wide, and 1 cm tall? | 6 cm cubed |
An object or substance will float in a fluid when the fluid's density is what? | greater than the object or substance |
Salt water is more dense than pure water because the salt adds to the water's mass without increasing its what? | volume |