A) 5 B) 2 C) 37 D) 1
A) NBr B) NCl2 C) NI4 D) NF3
A) period 2, group 2 B) 12 C) 2,8,2 D) 10,2
A) neutron B) electron C) proton D) atom
A) All atoms in group 18 have 18 electrons B) All atoms have a full outer electron shell or 8 electrons in the outer shell C) atoms in group 18 tend to be monatomic D) Group 18 is known as the noble gases
A) Mg (period 3) B) Ca (period 4) C) Sr (period 5) D) B (period 2)
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) So B) Sm C) S D) Na
A) Non-metals B) Halogens C) Metals D) Noble Gases
A) an alkali metal B) an inert gas C) an alkali earth metal D) a halogen
A) a metal and a non-metal B) non-metals only C) atoms of the same type D) different metals
A) atoms collect free electrons and use them as glue B) electron/s are shared between two atoms so both have a full outer shell C) one atom steals the electron/s from another D) atoms overlap and share protons
A) horizontal rows B) vertical columns C) days of the month nobody wants to be doing chemistry! D) groups with similar properties
A) O B) N C) Uub D) Ag
A) the three dimensional structure atoms form when they bond B) Part of a salad C) rings around the outside of the nucleus D) the heavy core of an atom
A) proton B) ion C) atom D) nucleus
A) 2 B) 8 C) 16 D) 6
A) electrons only B) Protons and electrons C) neutrons only D) Protons only
A) the number of electrons only B) the sum of the protons and the electrons C) the number of neutrons D) the number of electrons and the number of protons
A) only one atom can exist at a time 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) these kinds of atoms do not bond at all ever
A) Sodium B) Nullaborium C) Sodinium D) Natrium
A) Atoms get smaller as you move down the group, so they need less energy B) Atoms have a stonger hold on their electrons as you go down the group C) Atoms have increasing numbers of electrons in their outer shell as you move 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) PentaPhosphorous dichloride C) pentachloride monophosphorate D) Phosphorous pentachloride
A) carbonate B) hydrocarbon C) carbonohydrogenate D) carbohydrate
A) How musical instruments can be used to poison people B) All the chemical reactions that take place inside the human body C) the properties of hydrocarbons and their reactions D) how to grow fresh fruit and vegetables without chemicals
A) Alkenes B) Alkanes C) Alkaloids D) Alkynes
A) They are made from oil, which was made from the remains of dead plants and animals B) They are made of carbon C) they are synthetically produced by humans D) They come in many forms
A) carbon atoms bonding in pairs B) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms C) four carbon atoms bonding together D) glass
A) Henry Moseley B) Aristotle C) Dmitri Mendeleev D) Mr Thompson
A) lanthanides and Actinides B) Artificial and predicted elements C) transition elements and the silicons D) lanthinides and the semi-metals
A) The Alkali Earth metals B) The noble gases C) The transition metals D) The alkali metals
A) Oxygen, Nitrogen, Hydrogen and Helium. B) Charcoal, diamond, graphite and buckyballs. C) fossil fuels, plastics, litter and the greenhouse effect. D) People, plants, natural gas and carbon dioxide.
A) A pure and rare substance B) a substance made up of atoms with the same atomic number C) A combination of several atoms bonded covalently D) a charged atom.
A) You can see them with a microscope in the laboratory. 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) Scientists can see them using a Scanning Electron Microscope
A) Atomic number-mass number B) Protons + electrons C) Mass number - atomic number D) Neutrons = protons |