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