matter and pocket change
YOU thinking like a scientist
defining the atomom
revision of the atmomic model
organization of elemenstst
100

What is matter?

Anything that takes up space. (or if you're extra, anything that has mass and occupies space)

100

what is observation

when you use your senses to obtain information
100

What is an atom exactly???

the smallest particle of an element that retains its identity in a chemical reaction.

100

what is a quantum of energy

the amount of energy required to move an electron from one energy level to another energy level.
100

what are three classes of elements (this may in fact be rigged)

metals, nonmetals, and metalloids

200

What is Chemistry?

The study of the composition of matter, and all the changes that matter undergoes

200

what is a model

The representation of an object or event.

200

defitition of electronations (electrons, is what i mean, i didn't know electronations was a word)

negatively charged subatomic particles

200
what did danish physicist niels bohr propose

that an electron is found only in specific circular paths, or orbits, around the nucleus

200

hmm perchance are metals good or bad conductors

the first one

300

What is biochemistry?

The study of the processes that take place in living things. (digestion..etc)

300

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.

300

neutron defition???

neutrons are subatomic particles with no charge, but a mass nearly equal to that of a proton

300

what is the amplitude of a wave? (not water waves, light waves)

the wave's height from zero to the crest.

300

nonmetals are bad at-

conducting heat and electric current

400

Physical Chemistry... what is it?

The area that deals with the mechanism, rate, and energy transfer that occurs when matter undergoes a change. (the area that deals with energy stuff when matter changes)
400
bychance what is a theory

A procedure used to test a hypothesis

400

what was mr democritus's atom philosophy

his philosophy was that atoms are indivisible and indestructible 

400

what is the wavelength

the distance between crests

400

what does IUPAC stand for

The International Union of Pure and Applied Chemistry

500

Applied Chemistry!!! what is that?

Research directed towards a practical goal or application.

500

nowwhat is a scientific law

A statement that summarizes the result of many experiments.

500

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.

500

In the _____________ ______, electrons are ejected when light shines on a metal

photoelectric effect
500

Metalloids have properties similar to those of ______ and _________.

metals and nonmetals

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