11-1
What is matter?
Anything that takes up space or anything that we can taste, smell, or touch
What is all matter made of?
Particles
In what state of matter do the particles move fastest?
Gas
Who said that all matter is made up of tiny paricles?
Democritus
If you divide something into smaller and smaller particles, what do you end up with?
Atom
Why is breeze matter?
Because air takes up space
True or False
The particles in liquid do not move.
False.
Particles in matter always move.
What makes particles in matter move faster?
Heat
What do we need to see an atom?
A special microscope
True or False
All metals elements
False
Why is light not matter?
Because it does not take up any space
How can we tell two marbles of the same mass, volume, and density apart from each other?
By their colors (or shape or texture)
Why can we smell perfume after it is sprayed?
Because the particles move away when perfume is released into the air
Why can’t we see an atom with a regular microscope?
Because a single atom is too small to reflect light
What does the word atom mean?
Cannot be divided
The more particles an object has, the more ____ it has.
mass
Find the density of a box that has 20 grams of mass and 10 cm3
of volume
20 grams ÷ 10 cm3
= 2 grams per cm3
Instead of moving around, what happens to the particles of solid when an object moves?
They vibrate instead
Carbon dioxide changes directly from a _____ into a ______.
A solid into a gas
Why isn’t there an atom of water?
Because the smallest particle of water is made up of 2 different kids of atoms
What is a physical properties?
It is something you can observe or measure
Why does a bowling ball not change its shape when you roll it?
Because the particles stay tightly packed
Dry ice is the solid form of ____________.
Carbon dioxide
(CO2)
Although heat changes the state of matter, it does not change the ___ of matter
Amount
Why is water not an element?
Because water is made up of many billions of oxygen atoms and hydrogen atoms joined together