Flashcards
Atoms and Elements
Flashcards do conjunto (14)
- 1What is an atom?The basic building block of ordinary matter and is the basic unit of a chemical element
- 23 basic parts of an atomProtons, neutrons, electrons
- 3What is in the center, and what does it contain?The nucleus contains protons and neutrons
- 4What surrounds the nucleus?Electron cloud
- 5What are the rings in the Electron Cloud referred to as?Orbitals or shells
- 6What kind of charge do protons havePositive
- 7The atomic number is based on what?Number of protons
- 8Which is the one basic part that does not contribute to the atom's mass?Electrons (1 electron = 1/2000 atomic mass unit)
- 9What charge do neutrons have?None
- 10What charge do electrons have?Negative
- 11Which of the basic parts of an atom is not in the nucleus?Electrons
- 12In a neutral atom, which two basic parts are equal?Protons and electrons
- 13What did Dmitri Mendeleev do?He was a Russian chemist and inventor who formulated the Periodic Law and arranged the periodic table by atomic weight and similar properties
- 14Which two of the basic parts contribute to atomic mass?Protons and neutrons
Informações
- Descrição
- 6th grade Science (What Do You Know About H2O Unit) FlashCards sobre Atoms and Elements, criado por Clara Cat em 02-04-2019.
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- Clara Cat
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