A) 1 B) 5 C) 2 D) 37
A) NF3 B) NCl2 C) NBr D) NI4
A) 10,2 B) period 2, group 2 C) 12 D) 2,8,2
A) neutron B) atom C) proton D) electron
A) Group 18 is known as the noble gases B) All atoms have a full outer electron shell or 8 electrons in the outer shell C) All atoms in group 18 have 18 electrons 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) Neon Ne (period 2, group 18) B) Nitrogen N (period 2, group 15) C) Osmium (Os) because its symbol also starts with O D) Sulfur S (period 3, group 16)
A) So B) Na C) Sm D) S
A) Noble Gases B) Halogens C) Non-metals D) Metals
A) an alkali earth metal B) a halogen C) an inert gas D) an alkali metal
A) non-metals only B) different metals C) a metal and a non-metal D) atoms of the same type
A) one atom steals the electron/s from another B) atoms collect free electrons and use them as glue C) electron/s are shared between two atoms so both have a full outer shell D) atoms overlap and share protons
A) days of the month nobody wants to be doing chemistry! B) groups with similar properties C) horizontal rows D) vertical columns
A) O B) Uub C) Ag D) N
A) rings around the outside of the nucleus B) the heavy core of an atom C) Part of a salad D) the three dimensional structure atoms form when they bond
A) atom B) nucleus C) proton D) ion
A) 8 B) 6 C) 2 D) 16
A) Protons and electrons B) Protons only C) electrons only D) neutrons only
A) the number of neutrons B) the sum of the protons and the electrons C) the number of electrons only D) the number of electrons and the number of protons
A) only one type of atom is in the molecule B) the atom is desperate to gain one more electron to have a full outer shell C) these kinds of atoms do not bond at all ever D) only one atom can exist at a time
A) Nullaborium B) Sodinium C) Natrium 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 increasing numbers of electrons in their outer shell as you move down the group 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) hydrocarbon C) carbonohydrogenate D) carbohydrate
A) How musical instruments can be used to poison people B) the properties of hydrocarbons and their reactions C) All the chemical reactions that take place inside the human body D) how to grow fresh fruit and vegetables without chemicals
A) Alkenes B) Alkanes C) Alkaloids D) Alkynes
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) four carbon atoms bonding together C) carbon atoms bonding in pairs D) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms
A) Mr Thompson B) Dmitri Mendeleev C) Henry Moseley D) Aristotle
A) Artificial and predicted elements B) transition elements and the silicons C) lanthanides and Actinides D) lanthinides and the semi-metals
A) The transition metals B) The alkali metals C) The Alkali Earth metals D) The noble gases
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 pure and rare substance C) a substance made up of atoms with the same atomic number D) a charged atom.
A) Scientists have taken photographs of electrons with high speed cameras. B) Scientists have collected indirect evidence about the way they bahave and interact. C) Scientists can see them using a Scanning Electron Microscope D) You can see them with a microscope in the laboratory.
A) Neutrons = protons B) Protons + electrons C) Atomic number-mass number D) Mass number - atomic number |