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