1) Some materials are insulators and others are a) conductors b) whistles c) metals d) flutes 2) Heat travels from hot places to ... a) blue places b) cold places c) yellow places d) dangerous places 3) thermal insulators ________, or slow down, this movement of heat a) accelerate b) prevent c) hurry d) maximise 4) Thermal conductors ______ heat to travel through them more quickly a) allow b) prevent c) stop d) accelerate 5) Some materials, especially _________, allow electricity to pass through them easily a) rubber b) glue c) metals d) elastics 6) A physical change takes place when a material changes form but is still the ... a) main substance b) same substance c) different substance d) half substance 7) A chemical change takes place when a material changes into an entirely ... a) new substance b) old substance c) grey substance d) quarter substance 8) Physical or chemical changes may happen when a material is ... a) burnt or frozen b) heated or cooled c) cut or torn d) shattered or glued 9) reversible means ... a) permanent b) changeable/ temporary c) broken d) destroyed 10) When food is cooked, it usually undergoes a ... a) physical change b) happy change c) quick change d) chemical change 11) irreversible means ... a) temporary b) destroyed c) slight d) permanent 12) substances are mixed together and a new substance is formed called ... a) result b) prediction c) compound d) equation 13) substances are mixed together and do not form a new substance, it's called ... a) mixture b) solution c) result d) compound 14) A special kind of mixture is called ... a) result b) experiment c) solution d) diagraph 15) Like all mixtures, solutions can be ... a) removed b) destroyed c) separated d) reborn

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