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Flashcards do conjunto (7)
- 1What is atomic numberthe # of protons
or
the # of electrons - 2What is the mass numberThe total # of protons and neutrons
- 3What is atomic massThe weighted average of the mass and relative abundance
- 4How do you calculate number of neutronsmass # - atomic #
or
mass # - # of protons - 5What makes an element that specific elementThe number of protons
- 6Explain John Dalton's atomic theory1. 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, joined, or rearranged. Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction - 7—
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- FlashCards sobre Sem título, criado por Melody Zeng em 12-10-2016.
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- Melody Zeng
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