A) 2 B) 5 C) 1 D) 37
A) NCl2 B) NBr C) NF3 D) NI4
A) 12 B) 10,2 C) period 2, group 2 D) 2,8,2
A) proton B) neutron C) electron D) atom
A) Group 18 is known as the noble gases B) atoms in group 18 tend to be monatomic C) All atoms have a full outer electron shell or 8 electrons in the outer shell D) All atoms in group 18 have 18 electrons
A) Mg (period 3) B) B (period 2) C) Ca (period 4) D) Sr (period 5)
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) Na B) S C) Sm D) So
A) Non-metals B) Halogens C) Metals D) Noble Gases
A) an alkali earth metal B) a halogen C) an alkali metal D) an inert gas
A) atoms of the same type B) a metal and a non-metal C) non-metals only D) different metals
A) one atom steals the electron/s from another B) atoms collect free electrons and use them as glue C) electron/s are shared between two atoms so both have a full outer shell D) atoms overlap and share protons
A) groups with similar properties B) vertical columns C) days of the month nobody wants to be doing chemistry! D) horizontal rows
A) O B) Uub C) Ag D) N
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) proton B) nucleus C) atom D) ion
A) 16 B) 2 C) 8 D) 6
A) neutrons only B) Protons only C) electrons only D) Protons and electrons
A) the sum of the protons and the electrons B) the number of neutrons C) the number of electrons and the number of protons D) the number of electrons only
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) only one atom can exist at a time D) these kinds of atoms do not bond at all ever
A) Nullaborium B) Natrium C) Sodinium D) Sodium
A) Atoms get smaller as you move down the group, so they need less energy B) Atoms have increasing numbers of electrons in their outer shell as you move 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 a stonger hold on their electrons as you go down the group
A) Phosphorous pentachloride B) phosphorous dichloride C) pentachloride monophosphorate D) PentaPhosphorous dichloride
A) carbonohydrogenate B) carbonate C) carbohydrate D) hydrocarbon
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) Alkaloids C) Alkynes D) Alkenes
A) they are synthetically produced by humans B) They are made from oil, which was made from the remains of dead plants and animals C) They come in many forms D) They are made of carbon
A) glass B) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms C) carbon atoms bonding in pairs D) four carbon atoms bonding together
A) Aristotle B) Mr Thompson C) Dmitri Mendeleev D) Henry Moseley
A) lanthanides and Actinides B) Artificial and predicted elements C) lanthinides and the semi-metals D) transition elements and the silicons
A) The noble gases B) The Alkali Earth metals C) The transition metals D) The alkali metals
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 charged atom. B) a substance made up of atoms with the same atomic number C) A combination of several atoms bonded covalently D) A pure and rare substance
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 |