front 1 What is an atom? | back 1 The smallest unit of an element |
front 2 Is an atom the smallest unit in chemistry? | back 2 No |
front 3 What are nucleons? Name the examples. | back 3 Particles inside a nucleus such as protons and neutrons |
front 4 What are electrons? | back 4 Particles in an atom outside the nucleus with a negative charge. |
front 5 What is the atomic number of an atom? | back 5 The number of protons in the nucleus of an atom, this is also the number atoms are defined by and arranged by on the periodic table. |
front 6 What is the combined weight of of an atom's protons and neutrons called? | back 6 The mass number |
front 7 What are isotopes? | back 7 Atoms with the same number of protons (atomic number) but different numbers of neutrons |
front 8 What is a nuclide? | back 8 The nucleus of a specific isotope |
front 9 What is the molecular formula of Oxygen? | back 9 O2 |
front 10 What is the elementary symbol of Oxygen? | back 10 O (this is also how it appears on the periodic table) |
front 11 On the periodic table which number is in the top corner of an element: the mass number/nuclide symbol or the atomic number/number of protons? | back 11 The mass number/nuclide symbol |
front 12 What are the three isotopes of Carbon? Which is particularly useful to archeologists? | back 12 C-12, C-13, C-14 C-14 is useful to archeologists |
front 13 What is the half-life of C-14? | back 13 ~5000 years |