A) 1 B) 5 C) 37 D) 2
A) NCl2 B) NF3 C) NBr D) NI4
A) 12 B) 10,2 C) period 2, group 2 D) 2,8,2
A) electron B) atom C) neutron D) proton
A) atoms in group 18 tend to be monatomic B) All atoms in group 18 have 18 electrons 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) Mg (period 3) 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) Sm B) Na C) S D) So
A) Metals B) Halogens C) Non-metals D) Noble Gases
A) an inert gas B) an alkali earth metal C) an alkali metal D) a halogen
A) a metal and a non-metal B) different metals C) non-metals only D) atoms of the same type
A) electron/s are shared between two atoms so both have a full outer shell B) atoms overlap and share protons C) atoms collect free electrons and use them as glue D) one atom steals the electron/s from another
A) horizontal rows B) groups with similar properties C) days of the month nobody wants to be doing chemistry! D) vertical columns
A) Uub B) N C) O D) Ag
A) the three dimensional structure atoms form when they bond B) rings around the outside of the nucleus C) Part of a salad D) the heavy core of an atom
A) atom B) nucleus C) ion D) proton
A) 16 B) 8 C) 6 D) 2
A) Protons only B) neutrons only C) electrons only D) Protons and electrons
A) the sum of the protons and the electrons B) the number of electrons and the number of protons C) the number of neutrons D) the number of electrons only
A) only one atom can exist at a time B) only one type of atom is in the molecule C) these kinds of atoms do not bond at all ever D) the atom is desperate to gain one more electron to have a full outer shell
A) Nullaborium B) Natrium C) Sodinium 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 a stonger hold on their electrons as you go down the group D) Atoms have increasing numbers of electrons in their outer shell as you move down the group
A) Phosphorous pentachloride B) PentaPhosphorous dichloride C) phosphorous dichloride D) pentachloride monophosphorate
A) hydrocarbon B) carbonate C) carbonohydrogenate D) carbohydrate
A) How musical instruments can be used to poison people B) how to grow fresh fruit and vegetables without chemicals C) All the chemical reactions that take place inside the human body D) the properties of hydrocarbons and their reactions
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) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms B) carbon atoms bonding in pairs C) glass D) four carbon atoms bonding together
A) Aristotle B) Dmitri Mendeleev C) Henry Moseley D) Mr Thompson
A) lanthanides and Actinides B) lanthinides and the semi-metals C) Artificial and predicted elements D) transition elements and the silicons
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) Oxygen, Nitrogen, Hydrogen and Helium. C) fossil fuels, plastics, litter and the greenhouse effect. D) Charcoal, diamond, graphite and buckyballs.
A) a charged atom. B) a substance made up of atoms with the same atomic number C) A pure and rare substance D) A combination of several atoms bonded covalently
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) You can see them with a microscope in the laboratory. D) Scientists can see them using a Scanning Electron Microscope
A) Neutrons = protons B) Atomic number-mass number C) Mass number - atomic number D) Protons + electrons |