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