1) The temperature at which particles through out a liquid have enough energy to change to gas is called _______________. a) melting b) boiling c) condensation d) freezing 2) Puberty in girls usually start from ___________ years a) 12 b) 11 c) 10 d) 13 3) The melting point for gold is a) 1064ºc b) 100ºc c) 20ºc d) 90º 4) The temperature at which a solid becomes liquid is called _______________. a) melting b) boiling c) condensation d) freezing 5) Substances that conduct heat are called ___________________ a) electrical conductors b) wood conductors c) terminal conductors d) thermal conductors 6) ___________________ is a example of thermal conductors a) wood b) paper c) plastic spoon d) metal rod 7) _____________ happens when particles on the surface of a liquid change to gas a) freezing b) melting c) boiling d) evaporation 8) __________________ is the best conductor of heat a) Aluminum b) Silver c) Brass d) Tin 9) _____________ produces the sperm in males. a) test b) testes c) urethra d) ovary 10) The male sex cells are called ______________. a) ova b) sperm c) hormones d) ovary 11) _____________ are substances that can conduct electricity a) Thermal conductors b) Terminal Conductors c) Plastic Conductors d) Electrical conductors 12) Puberty in boys usually start from ___________ years a) 12 b) 11 c) 10 d) 13 13) A matter is said to have _____________ and occupy _____________ a) wilt / spark b) water / juice c) weight / space d) pace / speed 14) The changes during puberty are caused by ___________ a) hormones b) humans c) fertilization d) oviduct 15) Which of the following is a reversible reaction? a) baking cake b) burning wood c) rusting on a tin can d) burning butter in a hot pan 16) Fertilization in female takes place in the _____________. a) ovary  b) oviduct c) uterus d) birth canal 17) Where does the baby develop in female? a) ovary b) uterus c) oviduct d) fallopian tube 18) Which parts of the bulb is not an electrical conductor? a) glass mount and tungsten filament  b) tungsten filament and glass bulb c) glass bulb and glass mount d) cap and tungsten filament 19) The female sex cells are called ______________ a) ova b) sperm c) hormones d) ovary 20) _________________ is not an example of an electric conductor a) Metal iron b) copper wire c) Graphite d) Wood

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