Flashcards
Chemistry Chapter 14 Section 1
Flashcards do conjunto (16)
- 1Which item best represents Dalton’s mental image of an atom?a marble
- 2Which item best represents Thomson’s mental image of an atom?a chocolate-chip cookie
- 3“cannot be divided.”atoms
- 4matter made of atoms of only one kind.An element
- 5What were Dalton’s 4 ideas about matter?1. Matter is made up of atoms.
2. Atoms cannot be divided into smaller pieces.
3. All the atoms of an element are exactly alike.
4. Different elements are made of different kinds of atoms. - 6a piece of metal that can conduct electricity.An electrode
- 7electrode that has a positive charge.the anode
- 8Electrode with a negative chargeCathode
- 9What did Crookes think was causing the green glow in his cathode-ray tube?rays, or streams of particles
- 10How did Thomson Picture the atom?Thomson pictured a sphere of positive charge.
The negatively charged electrons were spread evenly among the positive charge. - 11fast-moving, positively charged bits of matteralpha particles
- 12Where is most of the mass of an atom Located?the nucleus.
- 13a positively charged particle present in the nucleus of all atoms.proton
- 14has the same mass as a proton and is electrically neutralneutron
- 15What two subatomic particles are found in the nucleus?Protons and neutrons
- 16Electrons travel in a region surrounding the nucleus, which is called...the electron cloud
Informações
- Descrição
- 9th Chemistry FlashCards sobre Chemistry Chapter 14 Section 1, criado por Brian Hedspeth em 06-01-2014.
- Criado por
- Brian Hedspeth · jan 2014
- Atualizado
- 15 set 2016
- Visualizações
- 41
- Avaliação