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isotopes
| Question | Answer |
|---|---|
| what is a isotopes? | atoms of the same element w/ diff mass due to # of neutrons. |
| What is the atomic theory ? | used to atom to describe the smallest and fundamental building block of all matter. 450 Democritus |
| What were the laws of chemistry? | laws r descriptions of reproducible natural phenomenon. can be mathematical formulas or descriptions using words they describe but do not give a reason/explanation |
| is there a change in mass during a chemical reaction? | no, mass is neither destroyed nor created during normal chemical reactions. |
| What is the law of definite proportions ? | A chemical compund contains the sme element in xactly the same elements all pure compounds have a definite combination of atoms of different elements:they have a specific chemical formula |
| law of multiple proportions? | if two or more different compounds are composed of the same two elements then the ratio of the masses of the second element combined with a certain mass of the first element element is a certain ratio of small whole numbers |
| daltons atomic theory | all matter is composed of tiny fundametal particals called atoms all atoms of a given element are identical in size,mass physical and chemical properties(was later changed) atoms of different elements differ from one another |
Created by:
jadej127
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