Density Flashcards
What is the formula for density?
Density = mass ÷ volume
Not all objects have regular volumes that are easy to measure. A ‘_______’ can be used in these cases.
Eureka Can
What is density?
Mass per unit volume
What are the units of density?
kg/m3
What does not normally change much when substances melt?
Volume per unit mass
How do we calculate volume?
Length x width x height
What is the density of water?
1000 kg/m3
What happens to the least dense of two immiscible liquids?
It falls to the bottom
After which scientist is the eureka can named?
Archimedes
7
How will we know if a substance is less dense than water?
It will float
What are the properties of dense material particles?
The particles in a less dense solid are further apart compared to a dense material. The bonds are not as secure as a dense material.
What are the properties of particles in a liquid?
What are the properties of particles in a liquid?
They are randomly arranged
They are close together
Move around each other
What are the properties of particles in a gas?
They are randomly arranged
Move quickly in all directions
They are far apart (free to roam)
Not chemically bonded
Where do particles have their energy?
Particles have energy in their kinetic energy stores and potential energy stores.
What is internal energy store?
Internal energy store of a system is the total energy that the particles have in their kinetic and potential energy stores.
