1) Which force keeps the planet in orbit a) Friction b) Magnetism c) Gravity 2) What happens to litmus paper in acidic solutions? a) Red litmus turns blue b) Blue litmus turns red c) Yellow litmus turns green 3) Universal indicator solution is usually green to begin with. What does this mean? a) It is acidic b) It is alkaline c) It is neutral 4) A liquid has a pH of 8. What does this mean? a) It is a strong acid b) It is a strong alkali c) It is neutral d) It is a weak alkali 5) A liquid has a pH of 1. What does this mean? a) It is a strong acid b) It is a strong alkali c) It is neutral d) It is a weak acid 6) Which salt is made when copper oxide and sulfuric acid react together? a) Copper chloride b) Copper sulphate c) Copper sulphide 7) What products are formed when a metal carbonate reacts with an acid? a) a salt only b) water only c) salt, water and carbon dioxide 8) What does this hazard symbol mean a) Toxic b) Corrosive c) Flammable 9) Which of these acids is most likely to be dangerous? a) Citric b) Carbonic c) Hydrochloric 10) What name is given to a hazardous substance that can burn through skin and other substances? a) Flammable b) Corrosive c) Oxidising 11) What name is given to a reaction in which an acid and base react with each other? a) Neutralisation b) Combustion c) Displacement 12) Which of the following is not a part of the male reproductive system? a) Penis b) Testis c) Uterus 13) Which of the following is not a part of the female reproductive system? a) Ovary b) Vagina c) Sperm duct 14) What are the male sex cells called? a) Sperm b) Sperm ducts c) Scrotum 15) Where are the male sex cells made? a) Scrotum b) Testis c) Penis 16) What are the female sex cells called? a) Ova b) Cilia c) Cervix 17) About how long does the menstrual cycle take? a) 14 days b) 28 days c) 36 days 18) What is ovulation? a) The release of a mature egg cell b) The loss of the lining of the uterus c) The joining of a male sex cell and a female sex cell 19) What would be happening between these two magnets a) Attract b) Nothing c) Repel 20) What galaxy is our solar system part of a) Milky way b) Andromeda c) Sleeping Beauty galaxy d) Spider 21) What is the name of the brightest star in our galaxy? a) North b) Sirius c) Ringo d) Rigel 22) What is the average of 3.9 + 3.2 + 4.5 a) 5.2 b) 4.3 c) 3.9

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