A) 37 B) 1 C) 2 D) 5
A) NF3 B) NBr C) NI4 D) NCl2
A) 12 B) 2,8,2 C) period 2, group 2 D) 10,2
A) proton B) electron C) neutron D) atom
A) atoms in group 18 tend to be monatomic B) Group 18 is known as the noble gases C) All atoms in group 18 have 18 electrons 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) Nitrogen N (period 2, group 15) D) Sulfur S (period 3, group 16)
A) S B) So C) Sm D) Na
A) Metals B) Noble Gases C) Halogens D) Non-metals
A) an alkali earth metal B) an alkali metal C) an inert gas D) a halogen
A) different metals B) atoms of the same type C) non-metals only D) a metal and a non-metal
A) atoms overlap and share protons B) one atom steals the electron/s from another C) atoms collect free electrons and use them as glue D) electron/s are shared between two atoms so both have a full outer shell
A) groups with similar properties B) vertical columns C) days of the month nobody wants to be doing chemistry! D) horizontal rows
A) O B) N C) Ag D) Uub
A) rings around the outside of the nucleus B) the three dimensional structure atoms form when they bond C) the heavy core of an atom D) Part of a salad
A) nucleus B) atom C) ion D) proton
A) 2 B) 8 C) 6 D) 16
A) electrons only B) Protons and electrons C) Protons only D) neutrons only
A) the number of electrons and the number of protons B) the number of neutrons C) the sum of the protons and the electrons 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) Natrium B) Nullaborium C) Sodium D) Sodinium
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) phosphorous dichloride B) pentachloride monophosphorate C) Phosphorous pentachloride D) PentaPhosphorous dichloride
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) how to grow fresh fruit and vegetables without chemicals D) All the chemical reactions that take place inside the human body
A) Alkaloids B) Alkenes C) Alkynes D) Alkanes
A) They are made of carbon B) they are synthetically produced by humans C) They come in many forms D) They are made from oil, which was made from the remains of dead plants and animals
A) carbon atoms bonding in pairs B) glass C) four carbon atoms bonding together D) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms
A) Henry Moseley B) Dmitri Mendeleev C) Mr Thompson D) Aristotle
A) lanthanides and Actinides B) lanthinides and the semi-metals C) transition elements and the silicons D) Artificial and predicted elements
A) The Alkali Earth metals B) The noble gases C) The alkali metals D) The transition metals
A) People, plants, natural gas and carbon dioxide. B) Charcoal, diamond, graphite and buckyballs. C) fossil fuels, plastics, litter and the greenhouse effect. D) Oxygen, Nitrogen, Hydrogen and Helium.
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) You can see them with a microscope in the laboratory. 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) 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 |