Fichas
Chemistry iGCSE - Atomic Structure - 2
Fichas del conjunto (26)
- 1—
- 2Explain, in terms of electrons, why the three isotopes have the same chemical properties.same number of electrons
- 3—The average / mean mass of an atom (of the element)
- 4Atoms contain three different types of particle. These are electrons, neutrons and protons. Which one of the three particles has a negative charge?electron(s)
- 5Atoms contain three different types of particle. These are electrons, neutrons and protons. Which one of the three particles has the smallest mass?electron(s)
- 6Atoms are neutral because they contain equal numbers of ____ and ____protons (and) electrons
- 7Isotopes are atoms with the same number of ____ but different numbers of ____ in the nucleus.protons
neutrons - 8The atomic number of this atom is ____12
- 9The mass number of this atom is ____24
- 10The electronic configuration of this atom is ___2.8.2
- 11How many different elements are there in ammonium chloride? (1)3
- 12Identify the two gases in mixture A. ___ and ___
- 13Identify the white solid B.
- 14—cross in box 2 (decomposition)
cross in box 4 (neutralisation)
- 15—
- 16The particle furthest from the centre of each atom is an electron - a neutron - a nucleus - a protonan electron
- 17The particle present in atom Y but not in atom X is an electron - a neutron - a nucleus - a protona neutron
- 18Both atoms are neutral because they have the same number of an electron - a neutron - a nucleus - a protonelectrons and protons
- 19—isotopes
atomic numbers
mass numbers
- 20—releases thermal energy
- 21—
- 22—
- 23Magnesium oxide is also used as an antacid. It helps relieve indigestion by neutralising hydrochloric acid in the stomach. Give the name and formula of the salt produced when magnesium oxide reacts with hydrochloric acid. (2)
- 24—
- 25—3
- 26—5
