Karteikarten
Atomic structure and isotopes
Karten in diesem Stapel (10)
- 1What is the charge of a proton? 1+ 0 1-The charge of a proton is 1+. This is also called positive.
- 2What is the charge of an electron? 0 1+ 1-The charge of an electron is 1-. This is also called negative.
- 3What is the mass of a neutron? 2 Almost zero 1The mass of a neutron is 1. This is the same as a proton.
- 4What is the mass of an electron? Almost zero 1 1-The mass of an electron is almost zero.
- 5What is the charge of an ion which has lost an electron? Neutral Positive NegativeThe charge of an ion that has lost an electron is positive because electrons have a negative charge.
- 6What is the charge of an ion which has gained an electron? Positive Neutral NegativeAn ion that has gained an electron has a negative charge because electrons have a negative charge.
- 7What is the atomic number of an atom? The number of neutrons The number of protons The number of electronsThe atomic number of an atom is the number of protons it contains.
- 8What is the mass number of an atom? The number of protons and neutrons The number of protons and electrons The number of electrons and neutronsThe mass number of an atom is the number of protons and neutrons.
- 9What are isotopes? Atoms of the same element with different numbers of electrons Atoms of the same element with different numbers of protons Atoms of the same element with different numbers of neutronsIsotopes are atoms of the same element with different numbers of neutrons.
- 10How many neutrons does hydrogen-3 have? 2 1 0Hydrogen-3 has one proton and two neutrons.