A) 1 B) 37 C) 2 D) 5
A) NCl2 B) NF3 C) NBr D) NI4
A) 2,8,2 B) period 2, group 2 C) 10,2 D) 12
A) atom B) neutron C) electron D) proton
A) All atoms in group 18 have 18 electrons B) atoms in group 18 tend to be monatomic C) All atoms have a full outer electron shell or 8 electrons in the outer shell D) Group 18 is known as the noble gases
A) Ca (period 4) B) Sr (period 5) C) B (period 2) D) Mg (period 3)
A) Nitrogen N (period 2, group 15) B) Osmium (Os) because its symbol also starts with O C) Neon Ne (period 2, group 18) D) Sulfur S (period 3, group 16)
A) S B) Na C) Sm D) So
A) Noble Gases B) Non-metals C) Metals D) Halogens
A) an inert gas B) an alkali metal C) an alkali earth metal D) a halogen
A) non-metals only B) different metals C) atoms of the same type D) a metal and a non-metal
A) one atom steals the electron/s from another B) atoms collect free electrons and use them as glue C) electron/s are shared between two atoms so both have a full outer shell D) atoms overlap and share protons
A) vertical columns B) groups with similar properties C) days of the month nobody wants to be doing chemistry! D) horizontal rows
A) O B) Uub C) N D) Ag
A) Part of a salad B) rings around the outside of the nucleus C) the heavy core of an atom D) the three dimensional structure atoms form when they bond
A) proton B) ion C) nucleus D) atom
A) 2 B) 8 C) 6 D) 16
A) electrons only B) Protons and electrons C) neutrons only D) Protons only
A) the sum of the protons and the electrons B) the number of neutrons C) the number of electrons only D) the number of electrons and the number of protons
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) Nullaborium B) Sodinium C) Natrium D) Sodium
A) Atoms have increasing numbers of electrons in their outer shell as you move down the group 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 get smaller as you move down the group, so they need less energy
A) Phosphorous pentachloride B) PentaPhosphorous dichloride C) pentachloride monophosphorate D) phosphorous dichloride
A) carbohydrate B) carbonohydrogenate C) hydrocarbon D) carbonate
A) how to grow fresh fruit and vegetables without chemicals B) How musical instruments can be used to poison people C) All the chemical reactions that take place inside the human body D) the properties of hydrocarbons and their reactions
A) Alkanes B) Alkynes C) Alkaloids D) Alkenes
A) They are made of carbon B) they are synthetically produced by humans C) They are made from oil, which was made from the remains of dead plants and animals D) They come in many forms
A) carbon atoms bonding in pairs B) four carbon atoms bonding together C) Carbon atoms arranged in a lattice with each atom bonding with 6 other atoms D) glass
A) Dmitri Mendeleev B) Henry Moseley C) Aristotle D) Mr Thompson
A) lanthinides and the semi-metals B) transition elements and the silicons C) lanthanides and Actinides D) Artificial and predicted elements
A) The noble gases B) The Alkali Earth metals C) The transition metals D) The alkali metals
A) Oxygen, Nitrogen, Hydrogen and Helium. B) Charcoal, diamond, graphite and buckyballs. C) People, plants, natural gas and carbon dioxide. D) fossil fuels, plastics, litter and the greenhouse effect.
A) a charged atom. B) A combination of several atoms bonded covalently C) A pure and rare substance D) a substance made up of atoms with the same atomic number
A) Scientists have taken photographs of electrons with high speed cameras. B) You can see them with a microscope in the laboratory. C) Scientists have collected indirect evidence about the way they bahave and interact. D) Scientists can see them using a Scanning Electron Microscope
A) Mass number - atomic number B) Atomic number-mass number C) Protons + electrons D) Neutrons = protons |