Shiny, metallic, conduct heat well and electric currents into solid form
atoms of the same element with different masses
Isotop is also
Quantitative description that has a unit and number.
What is a value?
understand core concepts;simplified reality
Constant volume, variable shape, faster than solid
Link between 2 atoms due to the sharing of two electrons 2 nonmetallic elements
amount of matter in an object
H, O, N, F, Ci
structure and behavior of matter
What is Chemistry?
Gold Au can be hammered into sheets without breaking
charged particles due to a loss or gain of electrons
anything that occupies space
Earth its the measure of the force of gravitational attraction between the object and Earth
a=mass number which is on the bottom in periodic table and is protons + neutrons; Z is Atomic
#,can vary & is # of protons
particles lose 1 or more electrons leaving them with a positive overall charge
Freedom of motion of their particles and how strongly the particles attract
How do solids, liquids, and gases differ?
particles gain one or more electrons leaving them with a negative overall charge
atoms with same atomic # but different mass #, atoms with same # of protons & electrons in
uncharged atom but different # of neutrons,
constant shape and volume, always moving direction and velocity vary
114+ building block of matter, cannot be chemically converted into simplar substance
All matter is composed of particles and all particles are in motion (varying speeds)
Kinetic Molecular Theory
Electrons share equally there is an even distribution of the - charge for the electrons in the
bond no partial charges of atom
Variable shape and volume, large avg. distance between particles little attraction
Neuron= 0 charge Proton= +1 p+ Electron= -1 charge
Neuron, proton, electron
No=Mixture Yes-can it be with a single symbol Yes- Element H2 no=compound H20
Classify Matter-Constant Comp, chemical formula to describe?