matter and pocket change
What is matter?
Anything that takes up space. (or if you're extra, anything that has mass and occupies space)
what is observation
What is an atom exactly???
the smallest particle of an element that retains its identity in a chemical reaction.
what is a quantum of energy
what are three classes of elements (this may in fact be rigged)
metals, nonmetals, and metalloids
What is Chemistry?
The study of the composition of matter, and all the changes that matter undergoes
what is a model
The representation of an object or event.
defitition of electronations (electrons, is what i mean, i didn't know electronations was a word)
negatively charged subatomic particles
that an electron is found only in specific circular paths, or orbits, around the nucleus
hmm perchance are metals good or bad conductors
the first one
What is biochemistry?
The study of the processes that take place in living things. (digestion..etc)
Sciencefiniton (what is science)
the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated by the process.
neutron defition???
neutrons are subatomic particles with no charge, but a mass nearly equal to that of a proton
what is the amplitude of a wave? (not water waves, light waves)
the wave's height from zero to the crest.
nonmetals are bad at-
conducting heat and electric current
Physical Chemistry... what is it?
A procedure used to test a hypothesis
what was mr democritus's atom philosophy
his philosophy was that atoms are indivisible and indestructible
what is the wavelength
the distance between crests
what does IUPAC stand for
The International Union of Pure and Applied Chemistry
Applied Chemistry!!! what is that?
Research directed towards a practical goal or application.
nowwhat is a scientific law
A statement that summarizes the result of many experiments.
dalton had a theory...what was it? (just one of the four parts, not all four. any of them counts)
1. All elements are composed of tiny indivisible particles called atoms.
2. Atoms of the same element are identical. The atoms of any one element are different from those of any other element.
3. Atoms of different elements can physically mix together or can chemically combine in simple whole-number ratios to form compounds.
4. Chemical reactions occur when atoms are separated from each other, joined, or rearranged in a different combination. Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction.
In the _____________ ______, electrons are ejected when light shines on a metal
Metalloids have properties similar to those of ______ and _________.
metals and nonmetals