A) 1 B) 5 C) 37 D) 2
A) NCl2 B) NBr C) NI4 D) NF3
A) 12 B) period 2, group 2 C) 10,2 D) 2,8,2
A) neutron B) electron C) atom D) proton
A) All atoms in group 18 have 18 electrons B) Group 18 is known as the noble gases C) atoms in group 18 tend to be monatomic D) All atoms have a full outer electron shell or 8 electrons in the outer shell
A) B (period 2) B) Sr (period 5) C) Ca (period 4) D) Mg (period 3)
A) Neon Ne (period 2, group 18) B) Osmium (Os) because its symbol also starts with O C) Sulfur S (period 3, group 16) D) Nitrogen N (period 2, group 15)
A) Sm B) S C) So D) Na
A) Noble Gases B) Metals C) Halogens D) Non-metals
A) an inert gas B) an alkali metal C) an alkali earth metal D) a halogen
A) atoms of the same type B) non-metals only C) different metals D) a metal and a non-metal
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 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) Ag B) O C) N D) Uub
A) the heavy core of an atom B) the three dimensional structure atoms form when they bond C) rings around the outside of the nucleus D) Part of a salad
A) ion B) nucleus C) atom D) proton
A) 2 B) 8 C) 16 D) 6
A) Protons and electrons B) electrons only C) neutrons only D) Protons only
A) the number of electrons only B) the number of electrons and the number of protons C) the number of neutrons D) the sum of the protons and the electrons
A) these kinds of atoms do not bond at all ever B) only one atom can exist at a time 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) Natrium B) Nullaborium C) Sodium D) Sodinium
A) Atoms have a stonger hold on their electrons as you go down the group B) Atoms get larger as you move down the the group so the electrons are less strongly attracted to the nucleus C) Atoms get smaller as you move down the group, so they need less energy D) Atoms have increasing numbers of electrons in their outer shell as you move down the group
A) PentaPhosphorous dichloride B) phosphorous dichloride C) pentachloride monophosphorate D) Phosphorous pentachloride
A) carbohydrate B) carbonate C) hydrocarbon D) carbonohydrogenate
A) the properties of hydrocarbons and their reactions B) How musical instruments can be used to poison people C) how to grow fresh fruit and vegetables without chemicals D) All the chemical reactions that take place inside the human body
A) Alkenes B) Alkynes C) Alkaloids D) Alkanes
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) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms C) carbon atoms bonding in pairs D) glass
A) Mr Thompson B) Aristotle C) Dmitri Mendeleev D) Henry Moseley
A) Artificial and predicted elements B) lanthinides and the semi-metals C) lanthanides and Actinides D) transition elements and the silicons
A) The noble gases B) The transition metals C) The Alkali Earth metals D) The alkali metals
A) People, plants, natural gas and carbon dioxide. B) Charcoal, diamond, graphite and buckyballs. C) Oxygen, Nitrogen, Hydrogen and Helium. D) fossil fuels, plastics, litter and the greenhouse effect.
A) A combination of several atoms bonded covalently B) a charged atom. C) a substance made up of atoms with the same atomic number D) A pure and rare substance
A) Scientists can see them using a Scanning Electron Microscope B) Scientists have taken photographs of electrons with high speed cameras. C) Scientists have collected indirect evidence about the way they bahave and interact. D) You can see them with a microscope in the laboratory.
A) Protons + electrons B) Neutrons = protons C) Atomic number-mass number D) Mass number - atomic number |