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