A) 5 B) 2 C) 1 D) 37
A) NBr B) NF3 C) NI4 D) NCl2
A) 2,8,2 B) 10,2 C) period 2, group 2 D) 12
A) electron B) atom C) proton D) neutron
A) Group 18 is known as the noble gases 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) atoms in group 18 tend to be monatomic
A) B (period 2) B) Sr (period 5) C) Ca (period 4) D) Mg (period 3)
A) Nitrogen N (period 2, group 15) B) Neon Ne (period 2, group 18) C) Sulfur S (period 3, group 16) D) Osmium (Os) because its symbol also starts with O
A) So B) S C) Sm D) Na
A) Non-metals B) Noble Gases C) Halogens D) Metals
A) an alkali metal B) an inert gas C) a halogen D) an alkali earth metal
A) a metal and a non-metal B) atoms of the same type C) non-metals only D) different metals
A) atoms overlap and share protons B) electron/s are shared between two atoms so both have a full outer shell C) atoms collect free electrons and use them as glue D) one atom steals the electron/s from another
A) days of the month nobody wants to be doing chemistry! B) groups with similar properties C) vertical columns D) horizontal rows
A) Uub B) N C) O D) Ag
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) proton B) nucleus C) atom D) ion
A) 16 B) 2 C) 8 D) 6
A) Protons and electrons B) Protons only C) electrons only D) neutrons only
A) the number of electrons and the number of protons B) the sum of the protons and the electrons C) the number of neutrons D) the number of electrons only
A) these kinds of atoms do not bond at all ever B) only one type of atom is in the molecule C) the atom is desperate to gain one more electron to have a full outer shell D) only one atom can exist at a time
A) Natrium B) Sodinium C) Sodium D) Nullaborium
A) Atoms get larger as you move down the the group so the electrons are less strongly attracted to the nucleus B) Atoms have a stonger hold on their electrons as you go down the group 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) pentachloride monophosphorate B) PentaPhosphorous dichloride C) Phosphorous pentachloride D) phosphorous dichloride
A) carbonate B) carbonohydrogenate C) hydrocarbon D) carbohydrate
A) All the chemical reactions that take place inside the human body B) How musical instruments can be used to poison people C) how to grow fresh fruit and vegetables without chemicals D) the properties of hydrocarbons and their reactions
A) Alkaloids B) Alkynes C) Alkanes D) Alkenes
A) They are made of carbon B) They come in many forms C) They are made from oil, which was made from the remains of dead plants and animals D) they are synthetically produced by humans
A) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms B) carbon atoms bonding in pairs C) four carbon atoms bonding together D) glass
A) Dmitri Mendeleev B) Henry Moseley C) Aristotle D) Mr Thompson
A) lanthanides and Actinides B) Artificial and predicted elements C) lanthinides and the semi-metals D) transition elements and the silicons
A) The Alkali Earth metals B) The transition metals C) The alkali metals D) The noble gases
A) Oxygen, Nitrogen, Hydrogen and Helium. B) fossil fuels, plastics, litter and the greenhouse effect. C) Charcoal, diamond, graphite and buckyballs. D) People, plants, natural gas and carbon dioxide.
A) a substance made up of atoms with the same atomic number B) A combination of several atoms bonded covalently C) A pure and rare substance D) a charged atom.
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) Mass number - atomic number B) Atomic number-mass number C) Neutrons = protons D) Protons + electrons |