Fichas
Chemistry - Atomic Structure
Fichas del conjunto (24)
- 1What is a protons mass and charge?Mass: 1
Charge: +1 - 2What is an electrons mass and charge?Mass: ~0
Charge: -1 - 3What is a neutrons mass and charge?Mass: 1
Charge: 0 - 4In an atom the amount of protons is equal to what?Electrons
- 5Define IonAn ion is an atom that has gained or lost electrons
- 6CationPositive ion
- 7AnionNegative ion
- 8Nuclear SymbolEach box on the periodic table
- 9Elemental symbolThe one or two letter symbol that represents the element
- 10The amount of protons defines what?What element the atom is
- 11Atomic numberThe amount of protons in an atom
- 12Mass numberThe sum of the mass of the neutrons and protons in an atom
- 13IsotopeDifferent forms of the same element that have the same amount of protons but a different number of neutrons
- 14Relative atomic mass =(Sum) Isotope abundance x Isotope mass / Abundance of all isotopes
- 15Who came up with the idea of the atom?Democritus
- 16John Dalton said what about the atom?Different types of spheres make up different elements and the atom is a solid sphere
- 17What did JJ. Thompson say about the atom? What was the model he invented?1. Atoms are not solid spheres
2. They are a positive ball with negative charges dotted around
3. The plum pudding model - 18What did Earnest Rutherford do in his experiment?Fired alpha particles at a thin sheet of gold.
- 19What happened while doing Rutherford’s experiment?Some particles where deflected and some came straight
- 20What did Rutherford’s results show?1. Most of the atom is space
2. There is a positive mass at the center
3. There is a negative cloud around the nucleus - 21Who said that electrons ORBIT the nucleus?Neils Bohr
- 22Who discovered the neutron?James Chadwick
- 23How many electrons can the first second and third shell hold?2,8,8
- 24Define unstableWhen the element wants to react with another to get a full outer shell
Información
- Descripción
- Atoms History of the atom Ions and isotopes
- Creado por
- Caleb Gray
- Visitas
- 3
- Valoración