Flashcards
Sem título
Flashcards do conjunto (10)
- 1If there are 40 electrons in an atom, how many protons are there?There will be 40 protons because protons=electrons
- 2What charge is a nucleus and why?Positive because it has protons( positive) and neutrons(neutral)
- 3what is a charged atom called?An ion
- 4What shares electrons, Ionic or covalent bondsCovalent bonds shares electrons
- 5What is the atomic number?The amount of protons in an atom
- 6If Chlorine(Ch) has a mass number of 35 and a atomic number of 17, how many protons, neutrons and electrons does it have?!7 protons and electrons(always the same ) and 18 neutrons
- 7How do you work out how many neutrons an atom has?Mass number-atomic number, for example with Chlorine(Ch) it would be 35-17, which is 18.
- 8What are the most and least reactive groups in the periodic table?Group 1(Alkali) are the most reactive metals, group 7(hallogens) have the most reactive non-metals and group 0(noble gases are very unreactive.
- 9Why are the noble gases the least reactive group in the periodic table?Because all the atoms have full outer shells so are satisfied.
- 10calcium has 20 electrons, what is it's electronic structure?It would have 4 electronic shells, with 2,8,8,2 electrons in the shells
Informações
- Descrição
- FlashCards sobre Sem título, criado por James Dunn em 21-03-2015.
- Criado por
- James Dunn
- Visualizações
- 2
- Avaliação