A) 2 B) 5 C) 37 D) 1
A) NI4 B) NF3 C) NCl2 D) NBr
A) 10,2 B) 12 C) 2,8,2 D) period 2, group 2
A) electron B) neutron C) proton D) atom
A) Group 18 is known as the noble gases B) All atoms have a full outer electron shell or 8 electrons in the outer shell C) All atoms in group 18 have 18 electrons D) atoms in group 18 tend to be monatomic
A) Mg (period 3) B) Sr (period 5) C) Ca (period 4) D) B (period 2)
A) Osmium (Os) because its symbol also starts with O B) Neon Ne (period 2, group 18) C) Sulfur S (period 3, group 16) D) Nitrogen N (period 2, group 15)
A) So B) Sm C) Na D) S
A) Halogens B) Metals C) Non-metals D) Noble Gases
A) a halogen B) an alkali earth metal C) an inert gas D) an alkali metal
A) different metals B) atoms of the same type C) non-metals only D) a metal and a non-metal
A) atoms overlap and share protons B) atoms collect free electrons and use them as glue C) one atom steals the electron/s from another D) electron/s are shared between two atoms so both have a full outer shell
A) horizontal rows B) days of the month nobody wants to be doing chemistry! C) groups with similar properties D) vertical columns
A) Ag B) N C) Uub D) O
A) Part of a salad B) rings around the outside of the nucleus C) the heavy core of an atom D) the three dimensional structure atoms form when they bond
A) nucleus B) ion C) proton D) atom
A) 2 B) 8 C) 6 D) 16
A) electrons only B) Protons only C) neutrons only D) Protons and electrons
A) the number of electrons only B) the sum of the protons and the electrons C) the number of neutrons D) the number of electrons and the number of protons
A) only one atom can exist at a time B) only one type of atom is in the molecule C) the atom is desperate to gain one more electron to have a full outer shell D) these kinds of atoms do not bond at all ever
A) Natrium B) Nullaborium C) Sodium D) Sodinium
A) Atoms have increasing numbers of electrons in their outer shell as you move down the group B) Atoms get larger as you move down the the group so the electrons are less strongly attracted to the nucleus C) Atoms get smaller as you move down the group, so they need less energy D) Atoms have a stonger hold on their electrons as you go down the group
A) phosphorous dichloride B) Phosphorous pentachloride C) PentaPhosphorous dichloride D) pentachloride monophosphorate
A) carbonate B) carbonohydrogenate C) carbohydrate D) hydrocarbon
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) Alkaloids B) Alkanes C) Alkenes D) Alkynes
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 made of carbon D) they are synthetically produced by humans
A) four carbon atoms bonding together B) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms C) glass D) carbon atoms bonding in pairs
A) Mr Thompson B) Aristotle C) Henry Moseley D) Dmitri Mendeleev
A) Artificial and predicted elements B) lanthinides and the semi-metals C) lanthanides and Actinides D) transition elements and the silicons
A) The Alkali Earth metals B) The alkali metals C) The transition metals D) The noble gases
A) fossil fuels, plastics, litter and the greenhouse effect. B) Oxygen, Nitrogen, Hydrogen and Helium. C) People, plants, natural gas and carbon dioxide. D) Charcoal, diamond, graphite and buckyballs.
A) A pure and rare substance B) a charged atom. C) A combination of several atoms bonded covalently D) a substance made up of atoms with the same atomic number
A) Scientists can see them using a Scanning Electron Microscope B) You can see them with a microscope in the laboratory. C) Scientists have taken photographs of electrons with high speed cameras. D) Scientists have collected indirect evidence about the way they bahave and interact.
A) Neutrons = protons B) Atomic number-mass number C) Mass number - atomic number D) Protons + electrons |