A) 37 B) 1 C) 2 D) 5
A) NI4 B) NCl2 C) NBr D) NF3
A) 10,2 B) 2,8,2 C) period 2, group 2 D) 12
A) atom B) proton C) electron D) neutron
A) All atoms have a full outer electron shell or 8 electrons in the outer shell B) All atoms in group 18 have 18 electrons C) Group 18 is known as the noble gases D) atoms in group 18 tend to be monatomic
A) Mg (period 3) B) Ca (period 4) C) B (period 2) D) Sr (period 5)
A) Sulfur S (period 3, group 16) B) Nitrogen N (period 2, group 15) C) Neon Ne (period 2, group 18) D) Osmium (Os) because its symbol also starts with O
A) S B) So C) Na D) Sm
A) Non-metals B) Metals C) Noble Gases D) Halogens
A) a halogen B) an alkali metal C) an inert gas D) an alkali earth metal
A) a metal and a non-metal B) non-metals only C) atoms of the same type D) different metals
A) one atom steals the electron/s from another B) electron/s are shared between two atoms so both have a full outer shell C) atoms collect free electrons and use them as glue D) atoms overlap and share protons
A) vertical columns B) groups with similar properties C) days of the month nobody wants to be doing chemistry! D) horizontal rows
A) O B) N C) Uub D) Ag
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) nucleus B) ion C) proton D) atom
A) 6 B) 2 C) 16 D) 8
A) electrons only B) Protons only C) neutrons only D) Protons and electrons
A) the sum of the protons and the electrons B) the number of electrons only 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) Nullaborium B) Sodinium C) Sodium D) Natrium
A) Atoms get larger as you move down the the group so the electrons are less strongly attracted to the nucleus B) Atoms have increasing numbers of electrons in their outer shell as you move down the group 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) hydrocarbon D) carbohydrate
A) the properties of hydrocarbons and their reactions B) All the chemical reactions that take place inside the human body C) how to grow fresh fruit and vegetables without chemicals D) How musical instruments can be used to poison people
A) Alkenes B) Alkanes C) Alkynes D) Alkaloids
A) They come in many forms B) they are synthetically produced by humans C) They are made from oil, which was made from the remains of dead plants and animals D) They are made of carbon
A) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms B) glass C) four carbon atoms bonding together D) carbon atoms bonding in pairs
A) Henry Moseley B) Dmitri Mendeleev C) Aristotle D) Mr Thompson
A) lanthinides and the semi-metals B) transition elements and the silicons C) lanthanides and Actinides D) Artificial and predicted elements
A) The transition metals B) The alkali metals C) The noble gases D) The Alkali Earth metals
A) Oxygen, Nitrogen, Hydrogen and Helium. B) fossil fuels, plastics, litter and the greenhouse effect. C) Charcoal, diamond, graphite and buckyballs. D) People, plants, natural gas and carbon dioxide.
A) a substance made up of atoms with the same atomic number B) A combination of several atoms bonded covalently C) A pure and rare substance 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) Mass number - atomic number B) Protons + electrons C) Atomic number-mass number D) Neutrons = protons |