A) 1 B) 5 C) 37 D) 2
A) NF3 B) NBr C) NCl2 D) NI4
A) 12 B) 2,8,2 C) 10,2 D) period 2, group 2
A) proton B) neutron C) electron D) atom
A) All atoms have a full outer electron shell or 8 electrons in the outer shell B) Group 18 is known as the noble gases C) All atoms in group 18 have 18 electrons D) atoms in group 18 tend to be monatomic
A) Ca (period 4) B) B (period 2) C) Sr (period 5) D) Mg (period 3)
A) Sulfur S (period 3, group 16) B) Neon Ne (period 2, group 18) C) Nitrogen N (period 2, group 15) D) Osmium (Os) because its symbol also starts with O
A) Sm B) S C) So D) Na
A) Noble Gases B) Metals C) Halogens D) Non-metals
A) an alkali earth metal B) an inert gas 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) one atom steals the electron/s from another C) atoms overlap and share protons D) atoms collect free electrons and use them as glue
A) vertical columns B) groups with similar properties C) horizontal rows D) days of the month nobody wants to be doing chemistry!
A) N B) Uub C) O D) Ag
A) the heavy core of an atom B) the three dimensional structure atoms form when they bond C) Part of a salad D) rings around the outside of the nucleus
A) atom B) nucleus C) proton D) ion
A) 2 B) 8 C) 16 D) 6
A) Protons and electrons B) electrons only C) neutrons only D) Protons only
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) these kinds of atoms do not bond at all ever C) the atom is desperate to gain one more electron to have a full outer shell D) only one type of atom is in the molecule
A) Sodium B) Natrium C) Sodinium D) Nullaborium
A) Atoms have increasing numbers of electrons in their outer shell as you move down the group 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 get larger as you move down the the group so the electrons are less strongly attracted to the nucleus
A) PentaPhosphorous dichloride B) Phosphorous pentachloride C) pentachloride monophosphorate D) phosphorous dichloride
A) hydrocarbon B) carbohydrate C) carbonate D) carbonohydrogenate
A) the properties of hydrocarbons and their reactions B) how to grow fresh fruit and vegetables without chemicals C) All the chemical reactions that take place inside the human body D) How musical instruments can be used to poison people
A) Alkynes B) Alkenes C) Alkanes D) Alkaloids
A) They are made from oil, which was made from the remains of dead plants and animals B) they are synthetically produced by humans C) They come in many forms D) They are made of carbon
A) four carbon atoms bonding together B) glass C) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms D) carbon atoms bonding in pairs
A) Mr Thompson B) Aristotle C) Dmitri Mendeleev D) Henry Moseley
A) Artificial and predicted elements B) transition elements and the silicons C) lanthanides and Actinides D) lanthinides and the semi-metals
A) The alkali metals B) The transition metals C) The noble gases D) The Alkali Earth metals
A) fossil fuels, plastics, litter and the greenhouse effect. B) Oxygen, Nitrogen, Hydrogen and Helium. 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 charged atom. 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) You can see them with a microscope in the laboratory. C) Scientists have taken photographs of electrons with high speed cameras. 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 |