Density and Volume
What is density?
Density is the measurement of mass in volume.
True or False? Molecules can stop moving.
False
What object has ONLY atoms?
All types of metal
What is expansion?
Expansion is when an object become bigger.
What is Volume?
Volume is the amount of space inside an object.
What are molecules are made out of?
Atoms
What are Atoms made out of?
A nucleus and electrons
What is contraction?
When an object becomes smaller.
What is the formula for volume?
Length x Width x Height = Volume
What are molecules doing in a liquid?
They are sunbathing and sipping on coca-cola.
Actually, they are moving so fast and bumping and crashing into other atoms, hence, breaking there lattice-work pattern.
What object does NOT have atoms?
None. All objects have atoms
Why does something contract?
Because cold molecules take up less space, causing it to contract.
True or False? Density does not change.
FALSEEEEEEEEEEEEEEEEEEE
Density can change if you change the mass of volume.
What do molecules do in a solid?
Molecules do a dance of attraction and repulsion. Repeating over and over.
What holds the electrons in place?
A force of attraction to the nucleus
Why does something expand?
Because heat makes the molecules move faster, pushing each other away causing the object too expand.
What is the formula for density?
Mass รท Volume = Density
What do molecules do when they when they come in contact with heat?
They move faster and faster or do the "little lumps dance".
What is the nucleus?
A little ball of matter.
Why are there spaces in between slabs of concrete?
It's because when it's hot the slabs of concrete will expand and we don't need them crashing into each other.