It all matters
mass and volume
The state of matter in which the particles are vibrating in place and have a fixed volume and shape is called ...
When a solid becomes a liquid.
Melting
Properties of matter (ways we can describe matter) that can be observed without changing the identity of the matter are called ...
physical properties
Which historic scientist and Greek Philosopher suggested that all matter is made of smaller particles that we can't see.
Democritus
What are the three subatomic particles?
Protons, neutrons, and electrons
the gravitational pull on an object
gas
There are small droplets of water on the side of an ice cold glass of lemonade. What phase change is this evidence of?
Condensation - water vapor touches the side of the cold glass and turns into a liquid.
Chemical properties - in order to test if the object has these properties, you would need to change the identity of the matter!
He thought it was alive. Later, we realized that he was actually observing the movement of the larger particles (the pollen) by the unobservable molecules and atoms.
What type of subatomic particle is UNIQUE to an element? (the same as the atomic number)
Protons
Mass is a measurement of
the amount of matter (stuff) inside an object.
The state of matter in which particles slide past each other and have a fixed volume but indefinite shape is called..
liquid
Evaporation - liquid (water) evaporating to become water vapor (gas).
Dry ice undergoes sublimation and goes directly from a solid to a gas. What type of change is this?
Physical - all phase changes are physical changes! It is all still Carbon dioxide. The chemical formula (molecular structure) of the matter is still the same!
What is the Osiris Rex
a nasa spacecraft that was sent to space to collect a small sample of matter from a near Earth asteroid named Bennu.
Where is the mass of the atom? How is the mass calculated?
In the nucleus - the protons and neutrons added together
volume
The phase of matter that moves around very quickly and has charged particles is called ...
plasma.
Deposition - gas to solid.
Cutting - physical change
Oxidation (browning of the avocado) - chemical change
The charges of the subatomic particles (protons and electrons) are what causes the attractive forces. Solids have stronger attractive forces than gases because the particles are closer together. (think about how magnets have stronger pulls on each other when they are closer together).
How many electrons can fit on each of the first four electron shells? (K, L, M, and N)
2- 8- 8- 8
List two things that are not considered matter.
Light and sound.
Most of the universe is made up of matter in what state.
Plasma!
During phase changes, the added/removed thermal energy (heat) is being used to break apart/form the electromagnetic bonds between the particles.
You pour olive oil and water into a beaker and realize they are different layers. Why? Does this have to do with the substances physical or chemical properties?
The densities of the substances are different which is a physical property. The water is on the bottom because water is more dense (the particles are more tightly packed) than the oil.
At what temperature would particles stop moving altogether? Has this ever happened?
o Kelvins - no, it is all theoretical and has never actually been achieved
By looking at the outer shell (valence shell) and seeing if it is full. If it is full, the element is likely not reactive If it isn't full, the element is reactive.