A) 37 B) 1 C) 5 D) 2
A) NCl2 B) NF3 C) NI4 D) NBr
A) period 2, group 2 B) 10,2 C) 12 D) 2,8,2
A) electron B) proton C) atom D) neutron
A) Group 18 is known as the noble gases B) All atoms in group 18 have 18 electrons C) atoms in group 18 tend to be monatomic D) All atoms have a full outer electron shell or 8 electrons in the outer shell
A) B (period 2) B) Ca (period 4) C) Sr (period 5) D) Mg (period 3)
A) Osmium (Os) because its symbol also starts with O B) Sulfur S (period 3, group 16) C) Nitrogen N (period 2, group 15) D) Neon Ne (period 2, group 18)
A) Sm B) So C) S D) Na
A) Non-metals B) Halogens C) Noble Gases D) Metals
A) an inert gas B) an alkali earth metal C) an alkali metal D) a halogen
A) atoms of the same type B) a metal and a non-metal C) different metals D) non-metals only
A) one atom steals the electron/s from another B) atoms overlap and share protons C) atoms collect free electrons and use them as glue D) electron/s are shared between two atoms so both have a full outer shell
A) horizontal rows B) groups with similar properties C) vertical columns D) days of the month nobody wants to be doing chemistry!
A) Uub B) Ag C) O D) N
A) rings around the outside of the nucleus B) the three dimensional structure atoms form when they bond C) the heavy core of an atom D) Part of a salad
A) proton B) atom C) nucleus D) ion
A) 16 B) 6 C) 8 D) 2
A) electrons only B) Protons only C) Protons and electrons D) neutrons only
A) the number of electrons and the number of protons B) the number of electrons only C) the sum of the protons and the electrons D) the number of neutrons
A) the atom is desperate to gain one more electron to have a full outer shell B) only one type of atom is in the molecule C) only one atom can exist at a time D) these kinds of atoms do not bond at all ever
A) Sodinium B) Natrium C) Sodium D) Nullaborium
A) Atoms get larger as you move down the the group so the electrons are less strongly attracted to the nucleus B) Atoms have a stonger hold on their electrons as you go down the group C) Atoms get smaller as you move down the group, so they need less energy D) Atoms have increasing numbers of electrons in their outer shell as you move down the group
A) pentachloride monophosphorate B) phosphorous dichloride C) PentaPhosphorous dichloride D) Phosphorous pentachloride
A) hydrocarbon B) carbonate C) carbonohydrogenate D) carbohydrate
A) the properties of hydrocarbons and their reactions B) how to grow fresh fruit and vegetables without chemicals C) All the chemical reactions that take place inside the human body D) How musical instruments can be used to poison people
A) Alkaloids B) Alkenes C) Alkynes D) Alkanes
A) They are made of carbon B) They come in many forms C) they are synthetically produced by humans D) They are made from oil, which was made from the remains of dead plants and animals
A) carbon atoms bonding in pairs B) glass C) four carbon atoms bonding together D) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms
A) Dmitri Mendeleev B) Aristotle C) Mr Thompson D) Henry Moseley
A) transition elements and the silicons B) Artificial and predicted elements C) lanthinides and the semi-metals D) lanthanides and Actinides
A) The alkali metals B) The transition metals C) The Alkali Earth metals D) The noble gases
A) Oxygen, Nitrogen, Hydrogen and Helium. B) People, plants, natural gas and carbon dioxide. C) fossil fuels, plastics, litter and the greenhouse effect. D) Charcoal, diamond, graphite and buckyballs.
A) A combination of several atoms bonded covalently B) A pure and rare substance C) a substance made up of atoms with the same atomic number D) a charged atom.
A) Scientists have taken photographs of electrons with high speed cameras. B) Scientists can see them using a Scanning Electron Microscope C) You can see them with a microscope in the laboratory. D) Scientists have collected indirect evidence about the way they bahave and interact.
A) Mass number - atomic number B) Neutrons = protons C) Atomic number-mass number D) Protons + electrons |