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