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