the characteristics of a matter that can be described or observed without involving any chemical reactions
descriptions of the physical QUALITIES of something
physical properties that are MEASURED and assigned a number of QUANTITY to (mass, volume, density, melting point etc.)
it is because of the different DENSITIES.
d = 2.7g/mL
V= 212.5cm³
D = 8.9 g/cm³
(multiply volume and density)
M = 157.8g
(subtract the initial and final volume)
V = 6mL
D = 4.2 g/mL
The density of the wire will still be 8.96cm³/g, because the density of something NEVER changes.
describe the ability of matter to react with another substance to form one or more new substances with different properties. it can only be observed when a substance chemically interacts with another sunbstance.
changes that alter a substance WITHOUT changing the chemical identity or composition. examples would be altering the appearance of the object and a change of state of a substance (solid to liquid, liquid to gas)
changes where one type of matter changes to produce one or more different types of matter (aka chemical reactions). the matter that is produced has a DIFFERENT identity and DIFFERENT properties from the original.
Solid is just solid. It has its own shape/structure and own volume.
solid particles are very still because the attraction force is very strong and the kinetic energy is low.
Liquid just takes up any container's shape. It has no definite shape but it has a definite volume.
Liquid particles are moving around at the bottom of its container. Thats why liquids take up their container's shape, because the attraction force and kinetic energy are equal.
Gas sometimes can not be seen but it takes up all of the space in the room. It has no definite shape and volume
Gas particles are freely moving around the space given because the kinetic energy is very high and the attraction force is very low.
It can be thought of being the same thing because the high kinetic energy of the particles causes collisions and these collisions produce heat.
The solvent has a higher kinetic energy, which means it will transfer some of that energy to the particles of the solute.
As the kinetic energy in the solute particles increase, they will eventually start to move around and collide with each other and push apart.
scenario example: as the odor particles escape the oven (bcus they are in a gas state). Once they move into the air, these particles will collide with the air particles and these collisions will send them soaring into random directions. which explains the more the odor particles the stronger the scent will be
the 3 states of matter normally EXPAND when they are heated and CONTRACT when they are cooled.
Thermal expansion happens when it gets heated. When the particles get heated, the kinetic energy increases severely. Which causes the particles to move around and collide at the walls of the container, causing to take up more space and have a greater volume.
Proton: 1 POSITIVE charge
Electron: 1 NEGATIVE charge
Neutron: ZERO CHARGE (lit neutral)
The speed of the electron's travel around the nucleus prevents the electrons from sticking to the prtons and prevents the electrons from falling into the nucleus.
Selenium has 34 protons and has 34 electrons. It is the same because ONE positive charge of one proton is equal to ONE negative charge of one electron.
Protons and neutrons are composite particles.
Electrons are elementary particles.
A proton and a neutron is a composite particle because it is composed of quarks and gluons.
An electron is made up of itself, nothing is more smaller than it. It belongs to the family of LEPTONS.
2 up quarks 1 down quark, and gluon
2 down quarks, 1 up quark, and gluons.
State changes happen when energy is added or removed from a system, causing the kinetic energy of the particles to increase or decrease. When the kinetic energy reaches a certain threshold, the balance between particle motion and intermolecular forces shifts, resulting in a change of state.