A) 50 B) 51 C) 60 D) 23
A) 17 B) 1 C) 3 D) 7
A) 103 B) 9 C) 5 D) 45
A) 15 B) 3 C) 33 D) 4
A) Noble Gases B) Halogens C) Transition Metals D) Alkaline Earth Metals E) Alkali Metals
A) 7 B) 2 C) 14.007 D) 14
A) 56 B) 6 C) 2 D) 137
A) 6 B) 1 C) 2 D) 7
A) Mercury is a solid metal. B) Chlorine is a liquid non-metal. C) Phosphorus is a non-metal gas. D) Tellurium is a solid metalloid.
A) 5 B) 96 C) 6 D) 42
A) 4 B) 3 C) 7 D) 2
A) proton/+, neutron/-, electron/no charge B) proton/+, electron/-, neutron/uncharged C) proton/+, electron/neutral, neutron/- D) proton/-, electron/+, neutron/no charge
A) protons and neutrons B) protons and electrons C) protons and orbits D) neutrons and electrons
A) Phosphorus and Silicon B) Argon and Krypton C) Mercury and Thallium D) Carbon and Boron
A) electrons orbit totally randomly around the nucleus B) the atom is mostly empty space C) the atom is a positively charged sphere with electrons embedded in it D) atoms are tiny solid spheres
A) group B) nucleus C) region D) period
A) Beryllium B) Magnesium C) Chlorine D) Lithium
A) number of protons B) group number C) number of neutrons D) period number
A) the mass number minus the atomic number B) greater than the mass number C) the same as the number of energy levels D) the same as the number of electrons
A) Number of Neutrons B) Period Number C) Group Number D) State of Matter
A) Nitrogen B) Francium C) Carbon D) Manganese
A) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity. B) Yes, some Carbon atoms have 6 protons, some have 7 protons.
A) by losing protons B) By adding or losing electrons C) by adding electrons D) by adding protons
A) by losing electrons B) by adding electrons C) by losing protons D) by adding protons
A) by losing electrons B) by losing protons C) by adding protons D) by adding electrons
A) by adding protons B) by adding neutrons C) by adding electrons D) by adding or losing neutrons
A) same as the atomic number B) same as the mass number C) difference between the atomic and mass number D) mass number divided by 2
A) the same as the number of neutrons B) the same as the atomic number C) the same as the mass number D) the difference between the mass and atomic number
A) B and O B) Mg and F C) Hg and C D) Na and Li
A) Mg and Cl B) F and At C) Li and Po D) Ba and Ra
A) The alkali metals B) The noble gases C) The halogens D) The alkali earth metals E) The transition metals
A) The noble gases B) The transition metals C) The alkali metals D) The halogens
A) 1 B) 17 C) 18 D) 8 E) 4
A) how many electrons there are B) how many protons there are C) how many electron levels there are D) how reactive they are
A) the number of protons B) how many electrons the atom has C) how many valence electrons the atom has D) the number of neutrons
A) Sodium B) Iron C) Silver D) Fluorine E) Mercury
A) Au B) Al C) F D) H E) Li
A) Al B) Li C) Mg D) Cs E) I
A) the number of protons B) the number of neutrons C) the number of electrons
A) Dalton B) Lewis C) Mendeleev D) Newton E) Bohr |