1) The nucleus of an atom contains... a) electrons and protons b) neutrons and protons c) neutrons only d) electrons 2) The atomic number tells us the number of? a) neutrons b) Protons or electrons c) electrons only d) The mass of the atoms 3) An isotope has different numbers of? a) electrons b) protons c) neutrons d) nuclei 4) To find the formula mass of a compound to need to? a) Add together the atomic masses b) Look it up in the periodic table c) Nothing. d) Add up the atomic numbers 5) The amount of product made in a chemical reaction is called? a) Stuff b) yield c) efficiency d) nonsense 6) When metal atoms turn in to positive ions they.. a) gain electrons b) gain protons c) lose neutrons d) lose electrons 7) When non-metal atoms form ions they... a) gain electrons b) gain protons c) lose neutrons d) lose electrons 8) Group 1 elements form which type of ion? a) positive ions (+1) b) negative ions c) they don't form ions 9) Giant ionic structures are held together by? a) Very weak covalent bonds b) Very strong ionic bonds c) covalent bonds d) forces of attraction 10) Metals conduct electricity because they have.. a) a plug b) positive metal ions c) delocalised electrons d) strong covalent bonds 11) In graphite, each carbon atom forms how many covalent bonds? a) 4 b) 3 c) 2 d) none 12) In diamond, each carbon atom forms how many covalent bonds? a) 4 b) 3 c) 23 d) 5 13) The rate of a chemical reaction can be increased by.. a) Increasing the temperature b) decreasing the temperature 14) Exothermic reactions... a) take in heat b) Give out heat c) have no effect on the temperature 15) If a precipitate is formed during a chemical reactions, it can be removed by... a) using tweezers b) distillation c) evaporation d) Filtering 16) Silicon dioxide is a very stong substance. It forms covalent bonds. Which of the following is true? a) It forms ionic bonds! b) Each silicon bonds to 4 oxygen atoms, each oxygen to 2 silicon atoms c) Each carbon atom forms 4 bonds 17) Increasing the temperature causes the particles to... a) Slow down b) Have less energy c) has no effect on the particles d) Have more energy and move around more. 18) If the forward reaction is exothermic, more product will be made if... a) the temperature is decreased b) the temperature is lowered c) temperature will have no effect 19) If a soluble salt is made (a solution will be made), it is removed by... a) Sieve b) Chromatography c) Filtering d) Evaporation

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