A) 1 B) 2 C) 37 D) 5
A) NBr B) NF3 C) NI4 D) NCl2
A) 12 B) period 2, group 2 C) 2,8,2 D) 10,2
A) electron B) atom C) neutron D) proton
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) atoms in group 18 tend to be monatomic D) All atoms in group 18 have 18 electrons
A) Mg (period 3) B) Ca (period 4) C) B (period 2) D) Sr (period 5)
A) Nitrogen N (period 2, group 15) B) Osmium (Os) because its symbol also starts with O C) Neon Ne (period 2, group 18) D) Sulfur S (period 3, group 16)
A) So B) Sm C) Na D) S
A) Metals B) Non-metals C) Halogens D) Noble Gases
A) an alkali earth metal B) an alkali metal C) an inert gas D) a halogen
A) a metal and a non-metal B) different metals C) atoms of the same type D) non-metals only
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 collect free electrons and use them as glue D) atoms overlap and share protons
A) horizontal rows B) vertical columns C) days of the month nobody wants to be doing chemistry! D) groups with similar properties
A) O B) Ag C) Uub D) N
A) Part of a salad B) the heavy core of an atom C) rings around the outside of the nucleus D) the three dimensional structure atoms form when they bond
A) nucleus B) proton C) ion D) atom
A) 6 B) 8 C) 2 D) 16
A) electrons only B) Protons only C) neutrons only D) Protons and electrons
A) the number of electrons and the number of protons B) the number of electrons only C) the number of neutrons D) the sum of the protons and the electrons
A) only one atom can exist at a time 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 type of atom is in the molecule
A) Sodinium B) Nullaborium C) Natrium D) Sodium
A) Atoms get smaller as you move down the group, so they need less energy B) Atoms have a stonger hold on their electrons as you go down the group C) Atoms get larger as you move down the the group so the electrons are less strongly attracted to the nucleus D) Atoms have increasing numbers of electrons in their outer shell as you move down the group
A) PentaPhosphorous dichloride B) pentachloride monophosphorate C) Phosphorous pentachloride D) phosphorous dichloride
A) hydrocarbon B) carbonohydrogenate C) carbonate D) carbohydrate
A) how to grow fresh fruit and vegetables without chemicals B) All the chemical reactions that take place inside the human body C) the properties of hydrocarbons and their reactions D) How musical instruments can be used to poison people
A) Alkanes B) Alkynes C) Alkenes D) Alkaloids
A) they are synthetically produced by humans B) They come in many forms C) They are made of carbon D) They are made from oil, which was made from the remains of dead plants and animals
A) glass B) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms C) four carbon atoms bonding together D) carbon atoms bonding in pairs
A) Mr Thompson B) Dmitri Mendeleev C) Henry Moseley D) Aristotle
A) Artificial and predicted elements B) transition elements and the silicons C) lanthinides and the semi-metals D) lanthanides and Actinides
A) The noble gases B) The Alkali Earth metals C) The transition metals D) The alkali metals
A) People, plants, natural gas and carbon dioxide. B) Charcoal, diamond, graphite and buckyballs. C) fossil fuels, plastics, litter and the greenhouse effect. D) Oxygen, Nitrogen, Hydrogen and Helium.
A) A combination of several atoms bonded covalently B) a charged atom. C) A pure and rare substance D) a substance made up of atoms with the same atomic number
A) You can see them with a microscope in the laboratory. B) Scientists have taken photographs of electrons with high speed cameras. C) Scientists can see them using a Scanning Electron Microscope D) Scientists have collected indirect evidence about the way they bahave and interact.
A) Protons + electrons B) Atomic number-mass number C) Mass number - atomic number D) Neutrons = protons |