Flashcards
Atoms
Flashcards do conjunto (11)
- 1What is thought to be the best type of model of the atom?The nuclear model
- 2Qualities of the nucleus in relation to the atom:1. It's in the middle of the atom
2. It contains protons and neutrons
3. It has a positive charge
4. Almost the entire mass of the atom is concentrated in the nucleus
5. Size-wise, it is tiny in comparison to the rest of the atom - 3Qualities of the electrons in relation to the atom:1. The move around the nucleus in energy levels (shells)
2. They're negatively charged
3. Tiny in size, but cover a lot of space
4. Size of the orbit determines how big they are
5. Have virtually no mass - 4What are the relative mass and charge of a proton?1 and +1
Protons are heavy and positively charged - 5What are the relative mass and charge of a neutron?1 and 0
Neutrons are heavy and neutral - 6What are the relative mass and charge of an electron?1/2000 and -1
Electrons are tiny and negatively charged - 7What is the relation between protons and electrons?Electrons EQUALS the number of protons
- 8What happens if some electrons are added or removed?The atom becomes charged and is then an ion
- 9How do you find out the number of neutrons?Subtract the atomic number from the mass number
- 10What are molecules?Groups of atoms
- 11What are molecules held together by?Covalent bonds
Informações
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- International Baccalaureate Chemistry (Atomic Structure) FlashCards sobre Atoms, criado por Kate Baldwin em 07-05-2016.
- Criado por
- Kate Baldwin
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- Criado por Sophie McCabe · 7 mai 2016
- Copiado por Kate Baldwin · 7 mai 2016
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